SOLUTION: x^2-2x+5x-(-x^2+7x)

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Question 571319: x^2-2x+5x-(-x^2+7x)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-2x+5x-(-x^2+7x)

x^2-2x+5x+x^2-7x

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

2x^2-4x


So x^2-2x+5x-(-x^2+7x) = 2x^2-4x for all values of x