For the functions f(x)=10x-8 \text{and} g(x)=5x+7, find the following. (a)(f+g)(x) (b)(f-g)(x)

boitshupoO

boitshupoO

Answered question

2021-09-06

For the functions f(x)=10x8andg(x)=5x+7, find the following.
(a)(f+g)(x)
(b)(fg)(x)

Answer & Explanation

Obiajulu

Obiajulu

Skilled2021-09-07Added 98 answers

Step 1
Let Given function f(x)=10x8andg(x)=5x+7
(a)(f+9)(x)
we know that, (f+9)(x)=f(x)+9(x)
(f+9)(x)=f(x)+9(x)
=(10x8)+(5x+7)
(f+9)(x)=15x1
Step 2
(b)(f9)(x)
we know that, (f9)(x)=f(x)9(x)
(f9)(x)=f(x)9(x)
=(10x8)(5x+7)
=10x85x7
(f9)(x)=5x15

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