(3a+2)(2a+3)-(a-1)(a-1)化简是多少?
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(3a+2)(2a+3)-(a-1)(a-1)化简是多少?
(3a+2)(2a+3)-(a-1)(a-1)化简是多少?
(3a+2)(2a+3)-(a-1)(a-1)化简是多少?
答案是5a2+15a+5
(a 1)(a 2)(a 3)(a
(a+2)(a+1)-a(a-3)
a(a-1)(a-2)(a-3)(a-4)因式分解
【1】a+a=a×a a= [ ]【2】a×a=a÷a a=[ ]【3】a×a=a-a a=[ ] [4]a-a=a+a a=[ ]
(通分) a/a^a^a+3a+2 ,a/a^a+2a+1 ,-1/3a+6
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