Practice
Solve for x.a) 10x2 − 7x − 12 = 0
{-4/5,3/2}
{-4/5,3/2}
b) 10x2 + 31x − 14 = 0
{2/5,-7/2}
{2/5,-7/2}
c) 14x2 + 47x − 7 = 0
{1/7,-7/2}
{1/7,-7/2}
d) 28x2 + 45x − 7 = 0
{1/7,-7/4}
{1/7,-7/4}
e) 28x2 − 33x − 28 = 0
{-4/7,7/4}
{-4/7,7/4}
f) 7x2 − 17x − 12 = 0
{-4/7,3}
{-4/7,3}
g) 20x2 − 17x − 10 = 0
{-2/5,5/4}
{-2/5,5/4}
h) 20x2 − 27x − 14 = 0
{-2/5,7/4}
{-2/5,7/4}
i) 7x2 + 31x − 20 = 0
{4/7,-5}
{4/7,-5}
j) 5x2 − 17x + 6 = 0
{2/5,3}
{2/5,3}
