How do you simplify #(4x^{2}-6x-5)+(3x^{2}-x+7)#?

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Answer 1 · 2016-12-01T17:02:59

#7x^2 - 7x + 2#

First, remove all the terms from parenthesis:

#4x^2 - 6x - 5 + 3x^2 - x + 7#

Next rearrange to have like terms next to each other:

#4x^2 + 3x^2 - 6x - x - 5 + 7#

Finally, combine like terms:

#(4 + 3)x^2 + (-6 - 1)x + (-5 + 7) ->#

#7x^2 - 7x + 2#