### Home > CAAC > Chapter 12 > Lesson 12.4.2 > Problem12-84

12-84.

Multiple Choice: For which of the following equations or inequalities is $x=−1$ a solution?

1. $(x+3)^2>4$

1. $\frac{x+5}{2}=2x^2$

1. $\sqrt{x+6}=25$

1. $x^2+5x+6=0$

Substitute $−1$ for $x$ in each of the equations or inequalities, then simplify and see which ones are true.