Practice
Solve for x.a) 1x2 −5x−7 = 0
5/2 ± /2
5/2 ± /2
b) -7x2 −7x+5 = 0
-1/2 ± 3/14
-1/2 ± 3/14
c) -7x2 +9x+5 = 0
9/14 ± /14
9/14 ± /14
d) 3x2 +7x−4 = 0
-7/6 ± /6
-7/6 ± /6
e) -3x2 −5x+5 = 0
-5/6 ± /6
-5/6 ± /6
f) 4x2 +9x+4 = 0
-9/8 ± /8
-9/8 ± /8
g) 1x2 −8x+6 = 0
4 ±
4 ±
h) 3x2 −6x−8 = 0
1 ± /3
1 ± /3
i) -2x2 +8x+9 = 0
2 ± /2
2 ± /2
j) -1x2 −3x+9 = 0
-3/2 ± 3/2
-3/2 ± 3/2
