Practice
Solve for x.a) x2 − 7x − 8 = 0
{8,-1}
{8,-1}
b) x2 + 6x + 8 = 0
{-2,-4}
{-2,-4}
c) x2 − 4x + 4 = 0
{2,2}
{2,2}
d) x2 + 10x + 21 = 0
{-3,-7}
{-3,-7}
e) x2 + 8x + 12 = 0
{-6,-2}
{-6,-2}
f) x2 + 14x + 48 = 0
{-8,-6}
{-8,-6}
g) x2 + 5x − 36 = 0
{4,-9}
{4,-9}
h) x2 − 4x + 3 = 0
{3,1}
{3,1}
i) x2 + 4x − 21 = 0
{3,-7}
{3,-7}
j) x2 + x − 12 = 0
{-4,3}
{-4,3}
