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) (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
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