6(p+q)²-12(p+q) (m+n)²-m-n 分解因式(提公因式法)
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6(p+q)²-12(p+q) (m+n)²-m-n 分解因式(提公因式法)
6(p+q)²-12(p+q) (m+n)²-m-n 分解因式(提公因式法)
6(p+q)²-12(p+q) (m+n)²-m-n 分解因式(提公因式法)
6(p+q)²-12(p+q)
=6(p+q)×【(p+q)-2】
=6(p+1)(p+q-2)
(m+n)²-m-n
=(m+n)²-(m+n)
=(m+n)(m+n-1)