Question

Find the solutions of the quadratic equation x2 + 7x + 10 = 0.

Question 13 options:

A)

x = 2, 5

B)

x = –2, –5

C)

x = –7, –3

D)

x = 7, 3

Answer 1

Explanation:

x² + 7x + 10 = 0

x = [-7 ± √(7² - 4·1·10)]/(2·1) = [-7 ± √9[/2 = [-7 ± 3]/2 = -2, -5