Question

What is the value of this expression when x= -1 and Y = 2?
4x³y²

Answer 1

Hii!

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`\leadsto\parallel\boldsymbol{Answer.}\parallel\gets`

Value of the expression =

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`\multimap\parallel\boldsymbol{Explanation.}\parallel\gets`

SUBSTITUTE the value of "x" instead of x and the value of "y" instead of y.

`\sf 4(-1)^3(2)^2}`

NOW we can use P.E.M.D.A.S. to simplify this expression.

Remember, this acronym stands for.

P=Parentheses,

E=Exponents,

M=Multiplication,

D=Division,

A=Addition,

S=Subtraction,

and now we can use it to simplify.

We have the exponents first.

`\sf 4\cdot(-1)\cdot4}`.

NOW we multiply.

`\sf -16}`

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Hope that this helped! Best wishes.

`\textsl{Reach far. Aim high. Dream big.}`

`\boldsymbol{-Greetings!-}`

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Answer 2

`\sf{\qquad\qquad\huge\underline{{\sf Answer}}}`

Let's evaluate ~

`\qquad \sf  \dashrightarrow \: 4 {x}^(3) {y}^(2)`

now, plug in the values :

`\qquad \sf  \dashrightarrow \: 4( -1 ) {}^(3)( {2)}^(2)`

`\qquad \sf  \dashrightarrow \: 4( - 1)(4)`

`\qquad \sf  \dashrightarrow \: - 4(4)`

`\qquad \sf  \dashrightarrow \: - 16`

So, the equivalent value is 16