Question

Expand & Simplify

(3x-3)^2 + (x+4)(x-1)

Please help... I have no clue what I'm doing and it's due in tomorrow. Thanks :)

Answer 1

10x^2-15x-5

Explanation:

(3x-3)^2 + (x+4)(x-1)

9x^2-18x+9+x^2+3x-4

10x^2-15x+5

Answer 2

`{(3x - 3)}^(2) + (x + 4)(x - 1) \\ = {(3x)}^(2) - 2 * 3x * 3 + {3}^(2) + ( {x}^(2) - x + 4x - 4) \\ = {(3x)}^(2) - 18x + 9 + {x}^(2) + 3x - 4 \\ = 9 {x}^(2) + {x}^(2) - 18x + 3x + 9 - 4 \\ = 10 {x}^(2) - 15x + 5 \\ thank \: you`