Simplify 4a^-2b

$4 a^{- 2} b$

Step 1

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

$4 \frac{1}{a^{2}} b$

Step 2

Combine $4$ and $\frac{1}{a^{2}}$ .

$\frac{4}{a^{2}} b$

Step 3

Combine $\frac{4}{a^{2}}$ and $b$ .

$\frac{4 b}{a^{2}}$