a(a-1)+(a-1)²=?因式分解
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a(a-1)+(a-1)²=?因式分解
a(a-1)+(a-1)²=?因式分解
a(a-1)+(a-1)²=?因式分解
a(a-1)+(a-1)²
=(a-1)(a+a-1)
=(a-1)(2a-1)如有不懂,
a(a-1)+(a-1)²
=(a-1)(a+a-1)
=(a-1)(2a-1)