How do you combine like terms in #(5x - 4x ^ { 2} ) + ( x ^ { 2} - 7x + 4)#?

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Answer 1 · 2017-05-19T03:01:01

#(5x-4x^2)+(x^2-7x+4)=color(blue)(-3x^2-2x+4#

#(5x-4x^2)+(x^2-7x+4)#

Remove the parentheses.

#5x-4x^2+x^2-7x+4#

Gather like terms.

#(-4x^2+x^2)+(5x-7x)+4#

Simplify.

#-3x^2-2x+4#