How do you simplify $(19x^2 + 11x + 15) - (-5x^2 - 6x - 6)$ ?

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Answer 1 · 2015-06-20T09:05:02

$=color(red)(24x^2)+color(blue)(17x)+ 21$

$19x^2 + 11x + 15 +5x^2 + 6x + 6$
Grouping like terms:

$=color(red)((19x^2 +5x^2 ))+color(blue)(( 11x +6x))+ (15 + 6)$
$=color(red)(24x^2)+color(blue)(17x)+ 21$

How do you simplify (19x^2 + 11x + 15) - (-5x^2 - 6x - 6)(19x^2 + 11x + 15) - (-5x^2 - 6x - 6)?