### Home > PC3 > Chapter 2 > Lesson 2.2.3 > Problem2-91

2-91.

​Which equations have exactly the same solutions? (Note: Solving is not required.)

1. $x^3+2x=x+5$

1. $x^3+x=5$

1. $x^3+x-5=0$

1. $\frac{x^3+2x}{x+5}=1$

Rewrite each equation in standard form.