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 + b)(x)

(a-b)(x)

(a+b)(x)

Step-by-step explanation:

Technically those 2 answers will give you a quadratic function. Whether you subtract or add a(x) and b(x), when you multiply x into both, you will get a quadratic (both equations will have highest degree of 2)

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

answer:  

123455421

step-by-step explanation: easy