Question

What is (f⋅g)(x)? f(x)=x4−9 g(x)=x3+9

Answer 1

check the attachment

Answer 2

$(f\cdot g)(x)=x^9+9x^4-9x^3-81$

Step-by-step explanation:

Given : $f(x)=x^4-9$ and  $g(x)=x^3+9$

To find : What is (f⋅g)(x)?

Solution :

$(f\cdot g)(x)=f(x)\cdot g(x)$

Substitute the value,

$(f\cdot g)(x)=(x^4-9)\cdot (x^3+9)$

$(f\cdot g)(x)=(x^4)(x^3+9)+(-9)(x^3+9)$

$(f\cdot g)(x)=x^9+9x^4-9x^3-81$

Therefore, $(f\cdot g)(x)=x^9+9x^4-9x^3-81$

#Learn more

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