Question

What is the missing polynomial ? ?-(20-4x-5x^2)=20-7x^2

Answer 1

the correct answer is C) 40-4x-12x^2

Answer 2

`-12x^2-4x+40`

Explanation:

We have been given a polynomial
`??-(20-4x-5x^2)=20-7x^2`. We are asked to find the missing polynomial.

To find our missing polynomial, we will add
`(20-4x-5x^2)` on both sides of our equation as:

`??-(20-4x-5x^2)+(20-4x-5x^2)=20-7x^2+(20-4x-5x^2)`

Using distributive property, we will get:

`??=20-7x^2+20-4x-5x^2`

Upon combining like terms, we will get:

`??=-7x^2-5x^2-4x+20+20`

`??=-12x^2-4x+40`

Therefore, the missing value of our given polynomial is
`-12x^2-4x+40`.