algebra

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Find the difference
(-x^2+8x-7)-(9x^2-5x-7)

• algebra -

1. Remove the 1st parenthesis.

2. Remove the 2nd parenthesis by multiplying each term by (-1):

-X^2+8X-7 - 9X^2+5X+7.
3. Combine like-terms and get:
-10X^2 + 13X.

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