Pre-Algebra Examples

$a^{- 2} = \frac{1}{27}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{1}{a^{2}} = \frac{1}{27}$

Step 2

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

$a \approx - 5.1961524, 5.1961524$

Step 3