2a2+3ab+b2+a2+ab 因式分解
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2a2+3ab+b2+a2+ab 因式分解
2a2+3ab+b2+a2+ab 因式分解
2a2+3ab+b2+a2+ab 因式分解
a2+2ab+b2+2ab+2a2
=(a+b)2+2a(a+b)
=(a+b)(3a+b)
=(3a+b)(a+b)
2a2+3ab+b2+a2+ab
(2a+b)(a+b)+a(a+b)
(a+b)(3a+b)