Question

4x2 + 12x = 0
a) x = 0, -3
b) x = 0, 3
c) x = -3
d) x = 3

Answer 1

a

Answer 2

a) x = 0, -3

Answer 3

4x(x+3) = 0
if 4x = 0, then x = 0/4 = 0

if x+3 = 0, then x= -3

so 0, -3