Precalculus Examples

${(1 + r)}^{3} = 5.5$

Step 1

Take the specified root of both sides of the equation to eliminate the exponent on the left side.

$1 + r = \sqrt[3]{5.5}$

Step 2

Subtract $1$ from both sides of the equation.

$r = \sqrt[3]{5.5} - 1$

Step 3

The result can be shown in multiple forms.

Exact Form:

$r = \sqrt[3]{5.5} - 1$

Decimal Form:

$r = 0.76517416 \dots$