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How do a squareroot a number like 1.5 I know the answer must be 2.25 but i am not getting it

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The squareroot function is at the "2ndF" of "3".

Posted on Mar 21, 2011


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What model Casio calculator? On some models you may need an additional set of parentheses so that the sum of squares goes into the square root.

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Squareroot of (1-7)2 +(-3-3)2 two stand fore second power

The square root of 72, or six times the square root of two.

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Why no parentheses in the following 1/ squareroot of 1/15^2 + 1/20^2 on any other calculator parentheses are needed in excess.

Contrary to what you may be thinking, parentheses are necessary to ensure that calculations are performed as intended. If you were using stacked fractions that may lift some ambiguities, but since you are not using parentheses anything goes.
Here is one interpretation of the expression. I am quite sure you will not be able to find it without inserting the necessary parentheses.


Mar 25, 2012 | Texas Instruments TI84Plus Graphic...

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How do you do exponets inside of square roots?

The same way you'd do it outside of square roots, or anywhere else.
Assuming you mean sqrt(13A)*sqrt(15A^2), in CLASSIC mode press
2nd [sqrt] 1 3 ALPHA [A] ) * 2nd [sqrt] 1 5 ALPHA [A] x^2 ENTER

Mar 25, 2012 | Texas Instruments TI-84 Plus Calculator

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I'm assumeing the problem is 2x^2 - 19x+22 = 0, solve for x.

I don't see any easy to factor this so I'll either need to complete the square or use the quadratic equation.
Using the quadratic equation, where A = 2, B = -19, and C = 22

x = [-(-19) +/- squareroot( 19^2 - 4*2*22)] / (2*2) =
(19 +/- squareroot(185))/4 =
8.150367 or 1.349632

Feb 01, 2011 | SoftMath Algebrator - Algebra Homework...

1 Answer

I dont know how to solve a squareroot problem with a little exponet in front of the square root

Use the xth-root function accessible by pressing MATH 5. For example, to find the third root of 8, press 3 MATH 5 8 ENTER.

Nov 25, 2010 | Texas Instruments TI-83 Plus Silver...

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(squareroot 5 + squareroot 2) (squareroot 5 - squareroot 2) how do you do this? I dont know how to work this out sorry seems dumb.

let square root 5 = X and square root 2 = Y

then the equation will be (X+Y) (X - Y)

which is = to X^2 - Y^2

= 5 - 2 = 3 is the answer.

pls ask any doubts if u have any.dont forget to rate this solution

Apr 15, 2010 | SoftMath Algebrator - Algebra Homework...

2 Answers

How do I calculate the square root of a number on my Texas TI-34 calculator?

enter the number, press 2nd and then press the button that has the squareroot and the x in the middle (beside the AC/ON button) for example, i have to find the square root of 25, i press 2nd and the button and i get 5, hoped this would help :-)

Sep 03, 2009 | Texas Instruments TI-34II Explorer Plus...

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