The compound interest formula has several constants in it. If you are given all but one of these constants, you can solve for the remaining constant.

In this FAQ, we look at solving for the rate *r* using roots.

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# Taking Roots To Solve for the Rate in the Compound Interest Formula

The compound interest formula has several constants in it. If you are given all but one of these constants, you can solve for the remaining constant.

In this FAQ, we look at solving for the rate *r* using roots.