18
QuizMultiple Choice

Solving Quadratic Equations: Quadratic Formula — Cumulative exam

Question 18 • FL-1200700-Mathematics for College Algebra MIS

Which function has real zeros at x = –8 and x = 5?

Answer
A
g(x) = x2 + 3x – 40
B
g(x) = x2 + 3x + 40
C
g(x) = x2 + 14x – 40
D
g(x) = x2 + 14x + 40

Explanation

A function with zeros at x = –8 and x = 5 has factors (x + 8)(x – 5). Multiplying gives x² + 3x – 40, which matches choice A. The zeros have a sum of –3 and a product of –40, so the other choices do not fit.

AI-written and checked against the verified answer.

Previous
Next