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


Practice

Solve for x.
a)    3x2 −x−7 = 0
1/6 ± 85/6

b)    -5x2 +9x+6 = 0
9/10 ± 201/10

c)    1x2 −5x−8 = 0
5/2 ± 57/2

d)    1x2 −4x−9 = 0
2 ± 13

e)    -3x2 −6x+5 = 0
-1 ± 26/3

f)    5x2 +5x−5 = 0
-1/2 ± 5/2

g)    3x2 +x−3 = 0
-1/6 ± 37/6

h)    1x2 −6x+2 = 0
3 ± 7

i)    2x2 −5x+1 = 0
5/4 ± 17/4

j)    9x2 +6x−6 = 0
-1/3 ± 7/3