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please please help me
Let f(x)=3x+5 and g(x)=2x^2+5x.
(fg)(2)=

Sagot :

Answer:

59.

Step-by-step explanation:

First replace the x in f(x) by g(x):

(fg)x =  3(2x^2 + 5x) + 5         (Tip: think right to left)

So (fg)(2) = 3(2(2)^2 + 5*2) + 5

= 3(18) + 5

=  54 + 5

= 59.

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