Final answer to the problem
$-9\left(-2x+1\right)\left(2x+1\right)$
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Step-by-step Solution
Specify the solving method
1
Factor the polynomial $\left(-6x+3\right)$ by it's greatest common factor (GCF): $3$
$3\left(-2x+1\right)\left(-6x-3\right)$
2
Factor the polynomial $\left(-6x-3\right)$ by it's greatest common factor (GCF): $-3$
$-9\left(-2x+1\right)\left(2x+1\right)$
Final answer to the problem
$-9\left(-2x+1\right)\left(2x+1\right)$