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you test it by giving the letters a value

say if X equals 5 and Y equals 7

then you calculate both expressions with that value.

If both answers are the same, then the simplified expression is correct, or an equivalent.

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Q: How do you know if the original expression is equivalent to the simplified expression?
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R to the negative 7th power plus s to the negative 12th power?

You can't simplify that expression, unless you know specific values for the variables.


What does 1 plus cosx?

That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.


When a number or expression that is multiplied by another number or expression to get a product?

Idont know factor


Can 31 over 40 be simplified?

no 31 over 40 cannot be simplified. it can't be simplified because when you divide 40 by 31 you get 1.290322581. as you can see: not a whole number. to know if any fraction can be simplified when you divide them (denomiantor or bottom number first) the outcome must be a whole number.


How do you Factor the expression 20k plus 50?

I don’t know

Related questions

What is the answer to 13 y-8?

21


How do you solve x plus 1 over x?

You don't "solve" an expression. You can solve an equation; an expression can be simplified or otherwise manipulated, and if you know the value of "x" (in this case), you can evaluate its value.


What is the square root of 6X-5?

11


What is sin theta minus 1?

That expression can't be simplified. If you know how much the angle (theta) is, you can calculate the sine (do it on a calculator), and then subtract 1.


What is x minus 6?

It is simply x - 6. The expression cannot be evaluated because the value of x is not given.


How much is 0.02 equal to?

0.02 is the equivalent of 2/100 which is the same as 1/50 when simplified


R to the negative 7th power plus s to the negative 12th power?

You can't simplify that expression, unless you know specific values for the variables.


How do you know if you have simplified a polynomial correctly?

I suppose you mean factoring the polynomial. You can check by multiplying the factors - the result should be the original polynomial.


What does 1 plus cosx?

That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.That can't be simplified. If you have a value for x, you can calculate the expression. Be sure to put your calculator into the correct mode; the angle can be measured either in radians or degrees. You have to know what measurement is being used, but if the angle is written as "x", radians are commonly used.


What is the answer to this equation -6 n -30?

Just to get you straight, that is actually an expression. Equations have equal signs in them. Just so you know. Anyway, it just so happens that this expression (-6n - 30) is already simplified. There are no like terms to combine there, since 30 does not have an "n".


How do you know when to use FOIL?

It is used when multiplying out the brackets of an expression such as (x+3)(x+4) which becomes x^2+4x+3x+12 which when simplified is x^2+7x+12


Is (67) a solution for 4x-5y-13?

This is not an equation since there is no equals sign. This means it is an expression, which can't be solved, only simplified. Even if it were an equation, there are two variables in this expression, so without knowing the values for both variables, we would not know if 67 is a solution.