Practice
Solve for x.a) 28x2 − 53x + 7 = 0
{1/7,7/4}
{1/7,7/4}
b) 14x2 + 45x − 14 = 0
{2/7,-7/2}
{2/7,-7/2}
c) 14x2 + 39x + 10 = 0
{-2/7,-5/2}
{-2/7,-5/2}
d) 5x2 − 33x − 14 = 0
{-2/5,7}
{-2/5,7}
e) 7x2 − 39x + 20 = 0
{4/7,5}
{4/7,5}
f) 3x2 − 19x − 14 = 0
{-2/3,7}
{-2/3,7}
g) 5x2 + 31x − 28 = 0
{4/5,-7}
{4/5,-7}
h) 28x2 + 27x − 10 = 0
{2/7,-5/4}
{2/7,-5/4}
i) 3x2 + 17x + 10 = 0
{-2/3,-5}
{-2/3,-5}
j) 14x2 − 25x + 6 = 0
{2/7,3/2}
{2/7,3/2}