Practice!

Sample Problem

Solve the following equation

x(x + 7) = -12

x = or

Solution

x(x + 7) = -12

x2 + 7x = -12

x2 + 7x + 12 = 0

(x + 3)(x + 4) = 0 

x + 3 = 0 and x + 4 = 0

x = -3 and x = -4