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September 23, 2014

September 23, 2014

Posted by **mema** on Sunday, May 22, 2011 at 2:12pm.

(-x^2+8x-7)-(9x^2-5x-7)

- algebra -
**Henry**, Sunday, May 22, 2011 at 5:16pm1. 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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