abcd Quadratic Equations - Quadratic Formula(L2)
Quadratic Equations - Quadratic Formula(L2)


Practice

Solve for x.
a)    4x2 +2x−1 = 0
-1/4 ± 5/4

b)    5x2 −5x−8 = 0
1/2 ± 185/10

c)    -8x2 −5x+4 = 0
-5/16 ± 317/16

d)    -7x2 −7x+1 = 0
-1/2 ± 77/14

e)    -4x2 +3x+6 = 0
3/8 ± 105/8

f)    3x2 −x−7 = 0
1/6 ± 85/6

g)    7x2 +6x−8 = 0
-3/7 ± 65/7

h)    4x2 −5x−8 = 0
5/8 ± 317/8

i)    5x2 +2x−4 = 0
-1/5 ± 21/5

j)    -9x2 −2x+8 = 0
-1/9 ± 73/9