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Given: g(x) = 3x² +2 and h(x)=2x+2

Find: g(h(x))
a-9x² + 12x+8
b-x² + 22x+8
c-2x² + 24x+14
d-There is no correct answer given
e-8x² +18x + 7

User OpenStack
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1 Answer

7 votes

Final answer:

To compute g(h(x)), substitute h(x) into g(x), which results in a composition that is not listed in the given options, making option (d) the correct answer.

Step-by-step explanation:

The question asks for the composition of two functions, which means we need to find g(h(x)). Here, g(x) = 3x² + 2 and h(x) = 2x + 2. To find g(h(x)), we substitute h(x) into every occurrence of x in g(x).

First, calculate h(x): h(x) = 2x + 2.

Now, substitute h(x) into g(x): g(h(x)) = 3(2x + 2)² + 2. Next, expand (2x + 2)²: (2x + 2)² = 4x² + 8x + 4.

Substitute this back into the g(x) equation: g(h(x)) = 3(4x² + 8x + 4) + 2 = 12x² + 24x + 12 + 2 = 12x² + 24x + 14.

The correct answer is not listed in the options provided by the student, which means the choice is (d) There is no correct answer given.

User Jonathan Leffler
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