Final answer to the problem
$a-b$
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Step-by-step Solution
Specify the solving method
1
Factor the polynomial $a^2-ab$ by it's greatest common factor (GCF): $a$
$\frac{a\left(a-b\right)}{a}$
2
Simplify the fraction $\frac{a\left(a-b\right)}{a}$ by $a$
$a-b$
Final answer to the problem
$a-b$