Practice
Solve for x.a) x2 − 2x − 15 = 0
{5,-3}
{5,-3}
b) x2 + 10x + 21 = 0
{-3,-7}
{-3,-7}
c) x2 − 17x + 72 = 0
{8,9}
{8,9}
d) x2 + 2x − 48 = 0
{6,-8}
{6,-8}
e) x2 + 5x − 24 = 0
{-8,3}
{-8,3}
f) x2 − 8x + 16 = 0
{4,4}
{4,4}
g) x2 + 4x + 3 = 0
{-1,-3}
{-1,-3}
h) x2 + 7x + 6 = 0
{-6,-1}
{-6,-1}
i) x2 + x − 12 = 0
{-4,3}
{-4,3}
j) x2 − x − 12 = 0
{4,-3}
{4,-3}
