Practice
Solve for x.a) 3x2 + 25x + 28 = 0
{-4/3,-7}
{-4/3,-7}
b) 10x2 + 13x − 3 = 0
{1/5,-3/2}
{1/5,-3/2}
c) 3x2 − 8x − 3 = 0
{-1/3,3}
{-1/3,3}
d) 20x2 − 51x + 28 = 0
{4/5,7/4}
{4/5,7/4}
e) 28x2 − 13x − 6 = 0
{-2/7,3/4}
{-2/7,3/4}
f) 12x2 + 13x + 3 = 0
{-1/3,-3/4}
{-1/3,-3/4}
g) 14x2 − 27x − 20 = 0
{-4/7,5/2}
{-4/7,5/2}
h) 7x2 − 45x − 28 = 0
{-4/7,7}
{-4/7,7}
i) 28x2 + 27x − 10 = 0
{2/7,-5/4}
{2/7,-5/4}
j) 20x2 + 31x + 12 = 0
{-4/5,-3/4}
{-4/5,-3/4}
