Quadratic Equations - Quadratic Formula(L2)

Practice

Solve for x.

a) -6x² +4x+8 = 0
¹/₃ ± ^$\sqrt{13}$/₃

b) -9x² −7x+4 = 0
^-7/₁₈ ± ^$\sqrt{193}$/₁₈

c) -3x² −7x+9 = 0
^-7/₆ ± ^$\sqrt{157}$/₆

d) -2x² +3x+1 = 0
³/₄ ± ^$\sqrt{17}$/₄

e) -1x² −4x+4 = 0
-2 ± 2

\sqrt{2}

f) 8x² −5x−9 = 0
⁵/₁₆ ± ^$\sqrt{313}$/₁₆

g) -3x² +4x+9 = 0
²/₃ ± ^$\sqrt{31}$/₃

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

i) -5x² +2x+2 = 0
¹/₅ ± ^$\sqrt{11}$/₅

j) 1x² +2x−2 = 0
-1 ±

\sqrt{3}