Question

Please view the image to get a better understanding ..im stressing :((

*please include the work to show what Danielle did wrong
What is the sum of x³ + 5x² – 7 and
5x³ – 3x² + 2x – 1?

Answer 1

Daniella didn't do distributive property before she started.

Explanation:

(
`x^(3)`+5
`x^(2)`-7) + (5
`x^(3)`-3
`x^(2)`+2x-1)

5
`x^(6)`-3
`x^(5)`+2
`x^(4)`-1
`x^(3)`+25
`x^(5)`-15
`x^(4)`+10
`x^(3)`-5
`x^(2)`-35
`x^(3)`+21
`x^(2)`-14x+7

5
`x^(6)`+22
`x^(5)`-13
`x^(4)`-26
`x^(3)`+16x
`x^(2)`-14x+7