algebra
posted by mema .
Find the difference
(x^2+8x7)(9x^25x7)

1. Remove the 1st parenthesis.
2. Remove the 2nd parenthesis by multiplying each term by (1):
X^2+8X7  9X^2+5X+7.
3. Combine liketerms and get:
10X^2 + 13X.
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