Mathematics for IGCSE & O level - Functions (Section 3 - No. 2) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 3 - No. 2)

If g(x) = 3x + 5 and h(x) = x^2, what is (g(h(x))?

3x^2 + 5

(3x + 5)^2

3x^2 + 5x

9x^2 + 30x +25

Explication

g(h(x)) = g(x^2) = 3(x^2)+ 5

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