12 13
14
15
16
17
18
19
20
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)

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

Step-by-step 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

answer: x

step-by-step explanation:

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.