Final Answer
$25\left(a+2b\right)\left(a-2b\right)$
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Step-by-step Solution
Specify the solving method
1
Factor the polynomial $\left(5a+10b\right)$ by it's greatest common factor (GCF): $5$
$5\left(a+2b\right)\left(5a-10b\right)$
2
Factor the polynomial $\left(5a-10b\right)$ by it's greatest common factor (GCF): $5$
$25\left(a+2b\right)\left(a-2b\right)$
Final Answer
$25\left(a+2b\right)\left(a-2b\right)$