用提公因式法解 3(a-2)²-6(a-2) 应当怎么解

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用提公因式法解3(a-2)²-6(a-2)应当怎么解用提公因式法解3(a-2)²-6(a-2)应当怎么解用提公因式法解3(a-2)²-6(a-2)应当怎么解3(a-2)&

用提公因式法解 3(a-2)²-6(a-2) 应当怎么解
用提公因式法解 3(a-2)²-6(a-2) 应当怎么解

用提公因式法解 3(a-2)²-6(a-2) 应当怎么解
3(a-2)²-6(a-2)
=3 (-4 + a) (-2 + a)