29.1k views
5 votes
PLEASE HELP f(x)=x^2-12x+35 g(x)=x−5, find(f⋅g)(x)

User Lukor
by
7.9k points

2 Answers

6 votes

Explanation:

(f.g)(x) = f(x) . g(x)

= (x² - 12x + 35)(x - 5)

=x(x²-12x+35) - 5(x²-12x+35)

= x³-12x²+35x-5x²+60x-175

(f.g)(x)=x³-17x²+95x-175

User Judelka
by
7.1k points
2 votes

Explanation:

this is a multiplication dot, right ?

so,

(f.g)(x)

or

(f×g)(x)

any arithmetic operation (like +, -, ×, ÷) between 2 functions is done by applying that operation to the functional expressions.

(f×g)(x) = (x² - 12x + 35)(x - 5) =

= x³ - 5x² - 12x² + 60x + 35x -175 =

= x³ - 17x² + 95x - 175

User Pelerano
by
7.0k points