Quadratic Equations - Quadratic Formula(L2)

Practice

Solve for x.

a) 4x² +7x+1 = 0
^-7/₈ ± ^$\sqrt{33}$/₈

b) -4x² +2x+1 = 0
¹/₄ ± ^$\sqrt{5}$/₄

c) -7x² +2x+7 = 0
¹/₇ ± ^{5 $\sqrt{2}$}/₇

d) -1x² +7x−1 = 0
⁷/₂ ± ^{3 $\sqrt{5}$}/₂

e) -1x² +7x+3 = 0
⁷/₂ ± ^$\sqrt{61}$/₂

f) -5x² −5x+9 = 0
^-1/₂ ± ^$\sqrt{205}$/₁₀

g) 7x² −2x−6 = 0
¹/₇ ± ^$\sqrt{43}$/₇

h) 2x² −x−9 = 0
¹/₄ ± ^$\sqrt{73}$/₄

i) -1x² +8x−4 = 0
4 ± 2

\sqrt{3}

j) 3x² −7x−4 = 0
⁷/₆ ± ^$\sqrt{97}$/₆