f(b)=7b³ + 8b and g(b) = b² + b - 10 what is f(b) * g(b) ?
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ANSWER:
Given,
f(b)=7b³+8b
g(b)=b²+b-10
f(b)×g(b)= (7b³+8b)(b²+b-10)
=7b³(b²+b-10) +8b(b²+b-10)
=7b³(b²)+7b³(b)-7b³(10)+8b(b²)+8b(b)-8b(10)
=7b⁵+7b⁴-70b³+8b³+8b²-80b
=7b⁵+7b⁴-62b³+8b²-80b
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