How to input quadratic formula

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Posted on Jan 02, 2017

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SOURCE: how to solve a quadratic formula using a casio

Hello,

The calculator does not have a solve program, but you can still use it to solve the quadratic equation with a little effort. If you know the therory skip toward the end.

Let aX^2+bX+C=0

1. First calculate the discriminant usually called Delta and given by

Delta =b^2 -4*a*c store the value in the variable D

If Delta is positive you have two roots X1 and X2 given by

X1=(-b+square root of Delta)/(2*a)

X2=(-b- square root of Delta)/(2*a)

If Delta is equal to 0, X1=X2=-b/(2*a)

If Delta i negative, no real solutions exist

You only solve if Delta is positive or equal to 0.

Putting in the values of a, b, and c

value of a (put you number) [SHIFT][STO] A

value of b (put your value) [SHIFT][STO] B

value of c (put you value) [SHIF][STO] C

[ALPHA] B [X^2] -4[x][ALPHA] A [x][ALPHA] C [=]

Value of delta is displayed. If it is positive, you store its square root in D

[Square root] [ANS] [SHIFT][STO] D ;

Calculate 1/(2*a) and store in variable F

1./(2[x] ALPHA A) [SHIFT][STO] F

To obtain X1

[ALPHA] F [x] ( (-) ALPHA B + ALPHA D ) [=]

To obtain X2

[ALPHA] F [x] ( (-) ALPHA B - ALPHA D ) [=]

Be careful: the (-) is the change sign not the regular minus sign.

Hope it helps.

Posted on Sep 24, 2009

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SOURCE: want to solve quadratic equations on my casio 3650p super fx

Hello,

In your manual, Appendix Program Library, (Page A1) you have the listing of the problem to solve the quadratic equation. Type it in your calculator and execute it.

Hope it helps.

Posted on Oct 02, 2009

SOURCE: i have the fx-9750gii. how do i store formulas?

Hi,

You can download the complete set of manuals available for this calculator by clicking on this **link** . There are 22 different chapters each describing a function in detail. Download all the chapters and save them for future reference.

Hope this solves your problem. Thanks

Posted on Oct 20, 2009

SOURCE: What is the better calculatorTI-83 Plus or FX-9750GII

If you have to restrict your selection to one or the other the Casio wins "hands tied behind its back". If you need convincing read on.

Advantages of Casio

Newer technology

About half the price

About twice the Ram

Uses iconic menus

Most screens have tab/menus: No need to scroll.

Conic graphic embedded in OS, not need for an extra application

Dynamic graphing embedded in OS, no need for an extra application

Has a reset button

Several types of statistical graphs that do not exit on TI83 (pie chart)

Ability to select the integration algorithm

Better screen resolution.

Posted on Jan 30, 2010

SOURCE: Solve using the quadratic formula: 36x^2 – 60x = -25

Why would you do that, when the expression is a perfect square?. Verify that **(6x-5)^2=36x^2-60x+25**.

Then the solution of (6x-5)^2=0 is a double root with value x=5/6

Posted on Dec 10, 2011

See image below

Oct 04, 2016 | Casio FX-9750GII Graphing Calculator

You must use the Statistics 2-var regression and choose quadratic regression.

Sep 16, 2014 | Casio Scientific Calculator FX-115ES PLUS...

Use the quadratic formula, or factor the quadratic polynomial. Once factored into a product of two first degree binomials, the roots are obtained by setting (in TURN) each binomial factor equal to zero.

May 02, 2014 | Casio fx-300ES Calculator

You can do it the same way people did it before calculators were invented. Just use the quadratic formula: http://en.wikipedia.org/wiki/Quadratic_formula. Some sophisticated calculators have generalized equation solvers that can handle equations much more complicated than the quadratic, but the fx-82 isn't one of them.

Nov 06, 2013 | Casio FX82MS Scientific Calculator

You can do it the same way people did it before calculators were invented. Just use the quadratic formula: http://en.wikipedia.org/wiki/Quadratic_formula.

Nov 06, 2013 | Casio FX-82MS Scientific Calculator

You can do it the same way people did it before calculators were invented. Just use the quadratic formula: http://en.wikipedia.org/wiki/Quadratic_formula, and let the calculator handle the arithmetic. Some sophisticated calculators have generalized equation solvers that can handle equations much more complicated than the quadratic, but the fx-82 isn't one of them.

Nov 06, 2013 | Casio FX82MS Scientific Calculator

Your scientific calculator is unable to solve complex equation with complex coefficients. You should try to solve by hand directly using the quadratic formula or by factoring the polynomial in z

failing that, another way would be to set z=x+iy, substitute this for z, carry out the algebra and try to separate real and imaginary parts. But your two equations will constitute a system of two quadratic equations. I am not aware of any general method to solve coupled nonlinear equations.

Good luck.

failing that, another way would be to set z=x+iy, substitute this for z, carry out the algebra and try to separate real and imaginary parts. But your two equations will constitute a system of two quadratic equations. I am not aware of any general method to solve coupled nonlinear equations.

Good luck.

Dec 20, 2012 | Casio FX-115ES Scientific Calculator

This calculator is unable to factor a polynomial expression.

In general there are a few factoring methods

In general there are a few factoring methods

**Factor by grouping terms****Factor by completing the square**(quadratic polynomial)**Factor by finding two integers such their sum is equal to the coefficient of the middle term, and their product is equal to the third (constant term)**. This is valid for a quadratic polynomial where the leading coefficient (of the x^2 term) is equal to 1.**X^2+SX+P**

Jul 31, 2012 | Casio FX-115ES Scientific Calculator

Hi,

You can download the complete set of manuals available for this calculator by clicking on this**link** . There are 22 different chapters each describing a function in detail. Download all the chapters and save them for future reference.

Hope this solves your problem. Thanks

You can download the complete set of manuals available for this calculator by clicking on this

Hope this solves your problem. Thanks

Oct 20, 2009 | Casio FX-9750GPlus Calculator

Unless I am failing to understand your problem, just combine like terms to get:

9x^2+2x+4 and then enter those coefficients into the quadratic solver.

That will get you the two answers -- both of them will be complex.

If you wanted to turn those two answers into factors (complex) of the original equation simply

change the signs on each and put an x in front.

Of course, the quadratic formula would also work.

CG

9x^2+2x+4 and then enter those coefficients into the quadratic solver.

That will get you the two answers -- both of them will be complex.

If you wanted to turn those two answers into factors (complex) of the original equation simply

change the signs on each and put an x in front.

Of course, the quadratic formula would also work.

CG

Apr 17, 2009 | Casio FX-115ES Scientific Calculator

May 20, 2014 | Casio FX9750GII Graphic Calculator

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