Choose the one alternative that best completes the statement or answers the question.
Solve the equation
-$\sqrt{2 \mathrm{k}+1}=13$
A) $\{84\}$
B) $\{-84\}$
C) $\{42\}$
D) $\{168\}$

Question

Quizplus · Accepted Answer

Squaring both sides of the equation $\sqrt{2k+1} = 13$ gives $2k + 1 = 169$. Solving for $k$, we subtract 1 from both sides to get $2k = 168$, and then divide by 2 to find $k = 84$.

Choose the One Alternative That Best Completes the Statement or Answers