因式分解:1+a+b+¼(a+b)²
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因式分解:1+a+b+¼(a+b)²
因式分解:1+a+b+¼(a+b)²
因式分解:1+a+b+¼(a+b)²
1+a+b+¼(a+b)²
=(1/4)(a^2+4a+4+2ab+4b)
=(1/4)[(a+2)^2+2b(a+2)]
=(1/4)(a+2)(a+2b+2)