Question

show step by step:

(3x³ + 6x² - 18x) + (4x² - 24x + 8)

Answer 1

Open the brackets:

$\left(3x^3+6x^2-18x\:\right)+\left(4x^2-24x+8\right)\:$

$3x^3+6x^2-18x+4x^2-24x+8\:\:$

Combine the like terms

$3x^3\:+6x^2+4x^2-18x-24x+8$

$3x^3\:+10x^2\:-42x+8\:$

Solution

$3x^3\:+10x^2\:-42x+8\:$