Question

PLEASE HELP I WILL MARK BRAINLEST

Answer 1

#1

• Error at sign shift due to -

Correct version

$\\ \rm\Rrightarrow (x^3+2x^2-x)-(3x^3-3x^2+2x-4)$

$\\ \rm\Rrightarrow x^3+2x^2-x-3x^3+3x^2-2x+4$

$\\ \rm\Rrightarrow x^3+5x^2-3x+4$

#2

• Not multiplied 3x with x

$\\ \rm\Rrightarrow (x^2-3x+2)(x+1)$

$\\ \rm\Rrightarrow x(x^2-3x+2)+x^2-3x+2$

$\\ \rm\Rrightarrow x^3-3x^2+2x+x^2-3x+2$

$\\ \rm\Rrightarrow x^3-2x^2-x+2$