CPM Homework Help : PC3 Problem 2-91

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2-91.

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

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

$x^3+x=5$

$x^3+x-5=0$

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

Hint:

Rewrite each equation in standard form.

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