Problem

Given that f(x)=x+2,g(x)=5x and h(x)=2f(x2)3g(x3), then what is the value of h(6) ?

Answer

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Answer

h(6)=57

Steps

Step 1 :h(x)=2f(x2)3g(x3)

Step 2 :h(6)=2f(62)3g(63)

Step 3 :h(6)=2f(4)3g(3)

Step 4 :f(x)=x+2

Step 5 :f(4)=4+2

Step 6 :f(4)=6

Step 7 :g(x)=5x

Step 8 :g(3)=5(3)

Step 9 :g(3)=15

Step 10 :h(6)=2(6)3(15)

Step 11 :h(6)=12+45

Step 12 :h(6)=57

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