Quadratic Equations - Quadratic Formula(L2)

Practice

Solve for x.

a) 7x² −7x−1 = 0
¹/₂ ± ^$\sqrt{77}$/₁₄

b) -4x² −4x+2 = 0
^-1/₂ ± ^$\sqrt{3}$/₂

c) -1x² +9x−9 = 0
⁹/₂ ± ^{3 $\sqrt{5}$}/₂

d) -4x² −8x+1 = 0
-1 ± ^$\sqrt{5}$/₂

e) -7x² −9x+4 = 0
^-9/₁₄ ± ^$\sqrt{193}$/₁₄

f) 7x² −8x−7 = 0
⁴/₇ ± ^$\sqrt{65}$/₇

g) -8x² −3x+1 = 0
^-3/₁₆ ± ^$\sqrt{41}$/₁₆

h) 8x² −4x−8 = 0
¹/₄ ± ^$\sqrt{17}$/₄

i) 4x² −4x−2 = 0
¹/₂ ± ^$\sqrt{3}$/₂

j) -1x² −6x+2 = 0
-3 ±

\sqrt{11}