Question

Pls help soon as possible

Answer 1

The right answer is
`4x^(3)-4x^(2)+8x-4`

The error is in the coefficient of
`x^(2)` and the coefficients of x

Explanation:

`(4x^(3)+4x^(2)-8x) - (8x^(2)-16x+4)`

`=4x^(3)+4x^(2)-8x-8x^(2)+16x-4` ⇒ collect the like terms

`=4x^(3)-4x^(2)+8x-4`

The error in two terms:

`12x^(2)` ⇒ must be
`-4x^(2)`

-24x ⇒ must be 8x