Question

Use the zero product property to find the solutions to the equation x2 – 15x – 100 = 0.
x = –20 or x = 5
x = –20 or x = –5
x = –5 or x = 20
x = 5 or x = 20

Answer 1

Factor: x^2 − 15x − 100 = (x − 20)(x + 5) = 0.
By the zero product property, x − 20 = 0 or x + 5 = 0, so x = 20 or x = −5.

Answer: x = −5 or x = 20.