Practice
Solve for x.a) x2 + 4x − 45 = 0
{-9,5}
{-9,5}
b) x2 − 6x − 16 = 0
{-2,8}
{-2,8}
c) x2 + 8x + 15 = 0
{-5,-3}
{-5,-3}
d) x2 − 11x + 18 = 0
{9,2}
{9,2}
e) x2 + 6x + 9 = 0
{-3,-3}
{-3,-3}
f) x2 − 13x + 42 = 0
{6,7}
{6,7}
g) x2 + 3x − 18 = 0
{-6,3}
{-6,3}
h) x2 − 5x + 6 = 0
{3,2}
{3,2}
i) x2 − 7x − 8 = 0
{8,-1}
{8,-1}
j) x2 − 9x + 20 = 0
{4,5}
{4,5}
