Solve the equation. $2 x ^ { 2 } = 200$
A) $x = \pm 100$
B) $x = \pm 10$
C) $x = 1$
D) $x = - 2$
E) none of these

Name: Solve the equation. $2 x ^ { 2 } = 200$ A) $x = \pm 100$ B) $x = \pm 10$ C) $x = 1$ D) $x = - 2$ E) none of these
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Question

Quizplus · Accepted Answer

Divide both sides by 2 to get $x^2=100$. Then take the square root of both sides, remembering to include both the positive and negative roots, to get $x=\pm 10$.

Solve the Equation 2x2=2002 x ^ { 2 } = 2002x2=200

Solve the Equation $2 x ^ { 2 } = 200$