Precalculus Examples

${(\frac{4}{5})}^{x} = 9^{1 - x}$

Step 1

Apply the product rule to $\frac{4}{5}$ .

$\frac{4^{x}}{5^{x}} = 9^{1 - x}$

Step 2

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx 1.11303667$

Step 3