SOLUTION: Simplify: (7x^2+3x-9)-(-x^2+8x-3)

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Question 43472: Simplify:
(7x^2+3x-9)-(-x^2+8x-3)
Answer by aaaaaaaa(138) About Me  (Show Source):
You can put this solution on YOUR website!
Be aware of minus signs! You ahve to invert the signs of the whole second poly:
%287x%5E2%2B3x-9%29-%28-x%5E2%2B8x-3%29
7x%5E2%2B3x-9+%2B+x%5E2+-+8x+%2B+3
Then, you sum every term that has the same literal part:
8x%5E2+-5x+-6