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# 3/4-2/5X7/12 Simplify the expression

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### Mathematics sign in

It is not possible to give a general answer to such a question. If you have a fraction, simplifying it entails dividing by factors that are common to the denominator and the numerator. If you have an algebraic expression such as a polynomial you simplify it by combining like terms until you have only one term of each type. A trigonometric expression can be compacted, etc.

May 27, 2014 | Computers & Internet

1 Answer

### (7*10^17)(8*10^-28)

(7*8)*10^(17-28)=56*10^(-11)=5.6*10^(-10)=5.6EE-10

Feb 14, 2014 | SoftMath Algebrator - Algebra Homework...

1 Answer

### (9a^3+3a^2) + (5a^3+6a^2)Math Problems

What's the problem? Do you want to solve it for a particular value of a? Do you want to simplify the expression? Factor the expression? Find its roots?

May 19, 2013 | Computers & Internet

1 Answer

### Simplify the expression 0.2y3+0.3y3+0.1y3 use integers or decimals for any numbers in the expression.

All the terms in the expression have a common variable factor (y^3). factor it out to get (0.2+0.3+0.1)y^3=0.6y^3 or (6/10)y^3 or (3/5)y^3.

Apr 19, 2013 | Office Equipment & Supplies

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### Simplifying radicals on fx-115ES

If your calculator is SetUp for Math Input/Output (MATHIO), a result that gives a radical will remain in radical form. If a radical appears in a denominator the whole expression is rationalized: Any radical left is put in the numerator. 1/Sqr(3) is displayed as Sqr(3)/3.

Feb 01, 2012 | Casio FX-115ES Scientific Calculator

1 Answer

### Give some example of math equation?

The following are examples of expressions:
2
x
3 + 7
2 × y + 5
2 + 6 × (4 - 2)
z + 3 × (8 - z)
Example:
Roland weighs 70 kilograms, and Mark weighs k kilograms. Write an expression for their combined weight. The combined weight in kilograms of these two people is the sum of their weights, which is 70 + k.
Example:
A car travels down the freeway at 55 kilometers per hour. Write an expression for the distance the car will have traveled after h hours. Distance equals rate times time, so the distance traveled is equal to 55 × h..
Example:
There are 2000 liters of water in a swimming pool. Water is filling the pool at the rate of 100 liters per minute. Write an expression for the amount of water, in liters, in the swimming pool after m minutes. The amount of water added to the pool after m minutes will be 100 liters per minute times m, or 100 × m. Since we started with 2000 liters of water in the pool, we add this to the amount of water added to the pool to get the expression 100 × m + 2000.
To evaluate an expression at some number means we replace a variable in an expression with the number, and simplify the expression.
Example:
Evaluate the expression 4 × z + 12 when z = 15.
We replace each occurrence of z with the number 15, and simplify using the usual rules: parentheses first, then exponents, multiplication and division, then addition and subtraction.
4 × z + 12 becomes
4 × 15 + 12 =
60 + 12 =
72
Example:
Evaluate the expression (1 + z) × 2 + 12 ÷ 3 - z when z = 4.
We replace each occurrence of z with the number 4, and simplify using the usual rules: parentheses first, then exponents, multiplication and division, then addition and subtraction.
(1 + z) × 2 + 12 ÷ 3 - z becomes
(1 + 4) × 2 + 12 ÷ 3 - 4 =
5 × 2 + 12 ÷ 3 - 4 =
10 + 4 - 4 =
10.

hope that help you

Jun 22, 2011 | LeapFrog Turbo Twist Math Cartridge 5th...

1 Answer

### How can I type in a radical expression and simplify it in radical form?

Sorry to disappoint you. You can enter a radical by making use of the square root or the universal power [^] with fractionary exponent, but once you press the [ENTER] key, your expression is calculated and displayed as a decimal number.
By updating the OS to version 2.53MP, you will be able to manipulate fractions more easily than your current OS version, but no facility is provided for radicals.

Feb 23, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

### Variables

Hello,
This calculator cannot handle symbolic algebra.
Use the rules to simplify the expressions: Get rid of the parentheses using distributivity od multiplication with respect to addition; group similar terms (terms with x, terms without x).
Hope it helps.

May 07, 2008 | Casio FX-115ES Scientific Calculator

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