Practice
Solve for x.a) -7x2 +2x+6 = 0
1/7 ± /7
1/7 ± /7
b) 6x2 −7x−4 = 0
7/12 ± /12
7/12 ± /12
c) -7x2 +8x+5 = 0
4/7 ± /7
4/7 ± /7
d) 7x2 −9x−7 = 0
9/14 ± /14
9/14 ± /14
e) -1x2 +6x+1 = 0
3 ±
3 ±
f) 1x2 −4x−8 = 0
2 ± 2
2 ± 2
g) 8x2 +3x−6 = 0
-3/16 ± /16
-3/16 ± /16
h) -9x2 +6x+2 = 0
1/3 ± /3
1/3 ± /3
i) -3x2 +2x+3 = 0
1/3 ± /3
1/3 ± /3
j) 9x2 +8x−8 = 0
-4/9 ± 2/9
-4/9 ± 2/9