(a+1)²分之a+(a+1)²分之1
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咨询记录 · 回答于2023-03-05
(a+1)²分之a+(a+1)²分之1
2a+2分析:(a+1)²分之a+(a+1)²分之1= (a+1)²/a + (a+1)²/1= (a+1)²(1/a + 1)= (a+1)²(1+a)/a= (a+1)²(a+1)/a= (a+1)³/a= (a+1)(a+1)²/a= (a+1)(a²+2a+1)/a= a³+2a²+a/a= a²+2a+1= 2a+2