Simplify the following expression.[tex]4a^{-2} b[/tex]

The first step for solving this expression is to express with a positive exponent using [tex] a^{-n} X \frac{1}{ a^{2}} X b[/tex].
4 × [tex] \frac{1}{ a^{2} } [/tex] × b
Now calculate the product.
[tex] \frac{4X1b}{ a^{2} }[/tex]
Before you get your final answer,, you must remember that any expression multiplied by 1 stays this same. This makes our final answer the following:
[tex] \frac{4b}{ a^{2}}[/tex]
Let me know if you have any further questions.
:)