题目内容
分解因式为
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A.(a-b)(a2+b2)
B.(a-b)2(a+b)
C.(a-b)3
D.(a-b)+a2+b2
A.(x+3)(x–4) B.(x–3)(x+4)
C.(x+3)(x+4) D.(x–3)(x–4)