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Given f(x)=2x and g(x)=x^2+8 find the following expressions.
​(a)(f*g)(4)

Sagot :

Step-by-step explanation:

f(x) = 2x

g(x) = x² + 8

(f × g)(x) = f(x) × g(x)

= 2x(x² + 8)

= 2x.x² + 2x. 8

= 2x³ + 16x

(f×g)(x) = 2x³ + 16x