Question

Find the sum of
(x) $x^2+x-2,2x-3x^2+5$ and $2x^2-5x+7$

Answer 1

Step: Finding the sum We need to add $(x^2+x-2),(2x-3x^2+5)$ and $(2x^2-5x+7).$
$=(x^2+x-2)+(2x-3x^2+5)+(2x^2-5x+7)$
$=(x^2-3x^2+2x^2)+(x+2x-5x)+(-2+5+7)$ [Grouping like terms]
$=(3x^2-3x^2)+(3x-5x)+(-2+12)$
$=0-2x+10$
$=-2x+10$
Hence, the answer is −2𝑥+10.