Practice
Solve for x.a) 10x2 − 23x + 12 = 0
{4/5,3/2}
{4/5,3/2}
b) 5x2 + 31x − 28 = 0
{4/5,-7}
{4/5,-7}
c) 10x2 − 11x − 6 = 0
{-2/5,3/2}
{-2/5,3/2}
d) 3x2 + 7x − 6 = 0
{2/3,-3}
{2/3,-3}
e) 20x2 + 31x + 12 = 0
{-4/5,-3/4}
{-4/5,-3/4}
f) 20x2 + 11x − 3 = 0
{1/5,-3/4}
{1/5,-3/4}
g) 3x2 + 13x + 12 = 0
{-4/3,-3}
{-4/3,-3}
h) 14x2 − 27x − 20 = 0
{-4/7,5/2}
{-4/7,5/2}
i) 5x2 + 29x + 20 = 0
{-4/5,-5}
{-4/5,-5}
j) 28x2 − 31x − 5 = 0
{-1/7,5/4}
{-1/7,5/4}
