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If f(x) = 4x + 10, which expression represents f(x2 + 2)?

User Leo Farmer
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In order to determine the answer to this item, we just have to substitute x² + 2 to all x's of the first function. That is,
f(x) = 4x + 10
will become,
f(x²+2) = 4(x²+2) + 10
Simplifying will give us an answer of,
f(x²+2) = 4x²+18
User CST
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