How do you simplify $(2xˆ2-8x+1)+(9xˆ2+4x-1)$ ?

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Answer 1 · 2015-07-06T15:34:03

$=11x^2 -4x$

$(2x^2−8x+1)+(9x^2+4x−1)$

Grouping like terms

$=color(blue)((2x^2 +9x^2)) + color(green)((-8x +4x)) + (1-1)$
$=color(blue)((11x^2)) - color(green)((4x)) + 0$

$=11x^2 -4x$

How do you simplify (2xˆ2-8x+1)+(9xˆ2+4x-1)(2xˆ2-8x+1)+(9xˆ2+4x-1)?