(b^2+2)(6b^5-10)
FOIL
=b^2 * 6b^5 + b^2 (-10) + 2(6b^5) + 2(-10)
= 6b^7 - 10b^2 + 12b^5 - 20
= 6b^7 + 12b^5 - 10b^2 - 20
Answer
6b^7 + 12b^5 - 10b^2 - 20
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