Question

f(b)=7b³ + 8b and g(b) = b² + b - 10 what is f(b) * g(b) ?

Answer 1

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