3 years ago

(8b2+6b-1) (8b2-8b+7)

1 answer:

6 0

=(8b2+6b+−1)(8b2+−8b+7)
=(8b2)(8b2)+(8b2)(−8b)+(8b2)(7)+(6b)(8b2)+(6b)(−8b)+(6b)(7)+(−1)(8b2)+(−1)(−8b)+(−1)(7)
=64b4−64b3+56b2+48b3−48b2+42b−8b2+8b−7
Answer:
=64b4−16b3+50b−7

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