Question

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TIN
a
If a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produces a quadratic function?
(ab)(x)
(a-b)(x)
(a + b)(x)

Answer 1

a(x) * b(x) will give a quadratic function

Explanation:

A quadratic function is one with an x^2 term

a(x) = 2x - 4 and b(x) = x + 2

a(x) + b(x) will only have an term with the highest power of x

a(x) - b(x) will only have an term with the highest power of x

a(x) * b(x) will only have an term with the highest power of x^2