Solve by the most appropriate method.
-$( 2 m - 1 ) ^ { 2 } = 9$
A)m = 2, -4
B)m = 4, -2
C)m = 2, -1
D)m = 1, -2

Name: Solve by the most appropriate method. -$( 2 m - 1 ) ^ { 2 } = 9$ A)m = 2, -4 B)m = 4, -2 C)m = 2, -1 D)m = 1, -2
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Question

Quizplus · Accepted Answer

First, solve the equation $(2m - 1)^2 = 9$ by taking the square root of both sides, which gives $2m - 1 = \pm3$. Solving the two resulting equations $2m - 1 = 3$ and $2m - 1 = -3$ gives $m = 2$ and $m = -1$, respectively.

Solve by the Most Appropriate Method (2m−1)2=9( 2 m - 1 ) ^ { 2 } = 9(2m−1)2=9

Solve by the Most Appropriate Method $( 2 m - 1 ) ^ { 2 } = 9$