A122-Solving Quadratic Equations by Taking Square Roots

1. Solve each equation by taking square roots.

$x^2 = 81$

{36, -36}

{9}

{9, -9}

{6, -6}

Question 1 of 10

2. Solve each equation by taking square roots.

$b^2 = 25$

{1, -1}

{9, -9}

{5, -5}

{3, -3}

Question 2 of 10

3. Solve each equation by taking square roots.

$2x^2 = 128$

No solution

{64, -64}

{8, -8}

{8}

Question 3 of 10

4. Solve each equation by taking square roots.

$10n^2 = 810$

{3, -3}

{6, -6}

{9, -9}

{6}

Question 4 of 10

5. Solve each equation by taking square roots.

$b^2 + 4 = 104$

${6\sqrt{3}, -6\sqrt{3}}$

{3, -3}

${6\sqrt{3}}$

{10, -10}

Question 5 of 10

6. Solve each equation by taking square roots.

$p^2 - 7 = -6$

{1, -1}

{-13, 13}

{9, -9}

{5, -5}

Question 6 of 10

7. Solve each equation by taking square roots.

$5x^2 + 3 = 8$

${2\frac{1}{5}, -2\frac{1}{5}}$

{4, -4}

{1, -1}

{7, -7}

Question 7 of 10

8. Solve each equation by taking square roots.

$5v^2 + 2 = 182$

{100, -100}

${96\frac{4}{5}, -96\frac{4}{5}}$

{10, -10}

{6, -6}

Question 8 of 10

9. Solve each equation by taking square roots.

$4x^2 + 7 = 23$

{2, -2}

${\frac{\sqrt{30}}{2}, -\frac{\sqrt{30}}{2}}$

${\frac{\sqrt{6}}{2}}$

{1, -1}

Question 9 of 10

10. Solve each equation by taking square roots.

$3 - 7r^2 = -445$

{64, -64)

{8, -8}

${\frac{\sqrt{103}}{3}, -\frac{\sqrt{103}}{3}}$

{8}

Question 10 of 10