Quadratic Equations - Quadratic Formula(L2)

Practice

Solve for x.

a) -1x² +x+4 = 0
¹/₂ ± ^$\sqrt{17}$/₂

b) -9x² −5x+3 = 0
^-5/₁₈ ± ^$\sqrt{133}$/₁₈

c) -2x² −5x+5 = 0
^-5/₄ ± ^$\sqrt{65}$/₄

d) -2x² −7x+6 = 0
^-7/₄ ± ^$\sqrt{97}$/₄

e) 8x² +8x−9 = 0
^-1/₂ ± ^$\sqrt{22}$/₄

f) -5x² −2x+5 = 0
^-1/₅ ± ^$\sqrt{26}$/₅

g) -5x² +4x+6 = 0
²/₅ ± ^$\sqrt{34}$/₅

h) 2x² +7x+4 = 0
^-7/₄ ± ^$\sqrt{17}$/₄

i) -5x² +3x+5 = 0
³/₁₀ ± ^$\sqrt{109}$/₁₀

j) 3x² −9x+2 = 0
³/₂ ± ^$\sqrt{57}$/₆