Question

I need help with this math question ASAP. someone PLEASE help me

Answer 1

`xy^2+2x-4y^2`
`;-58`

Explanation:

First, align the same terms next to each other so that combining like terms will be easier.

Remember like terms have the same variables and powers. To combine like terms, all you have to do is add/subtract the coefficients (the numbers in from of the variables).

`2xy^(2) +2xy^(2) -3xy^(2) +3x-x-4y^(2)`

`2xy^(2) +2xy^(2) -3xy^(2) =xy^(2)`

`3x-x=2x`

And
`-4y^(2)` stays the same because there is no term that has
`y^(2)`.

So, we have
`xy^(2) +2x-4y^(2)`.

Now to evaluate for x= -2 and y= -3 you have to plug them into the simplified expression.

`(-2)(-3)^(2) +2(-2)-4(-3)^(2)`

According to PEMDAS we first solve the exponents:
`(-2)(9) +2(-2)-4(9)`

Then we multiply:

`(-18) +(-4)-36`

Add/subtract:

-58