Quadratic Equations - Quadratic Formula(L2)

Practice

Solve for x.

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

b) -6x² −3x+6 = 0
^-1/₄ ± ^$\sqrt{17}$/₄

c) 9x² −7x−5 = 0
⁷/₁₈ ± ^$\sqrt{229}$/₁₈

d) -2x² −9x+4 = 0
^-9/₄ ± ^$\sqrt{113}$/₄

e) 5x² −6x−7 = 0
³/₅ ± ^{2 $\sqrt{11}$}/₅

f) -2x² +6x−3 = 0
³/₂ ± ^$\sqrt{3}$/₂

g) -2x² +x+8 = 0
¹/₄ ± ^$\sqrt{65}$/₄

h) 1x² +6x+4 = 0
-3 ±

\sqrt{5}

i) 7x² +x−4 = 0
^-1/₁₄ ± ^$\sqrt{113}$/₁₄

j) -2x² +2x+3 = 0
¹/₂ ± ^$\sqrt{7}$/₂