摘要:把(x-3)2-2(x-3)-5(x-3)2+(x-3)中的(x-3)看成一个因式合并同类项.结果应( ) A. -4(x-3)2+(x-3) B. 4(x-3)2-x (x-3) C. 4(x-3)2-(x-3) D . -4(x-3)2-(x-3)
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把(x-3)2-2(x-3)-5(x-3)2+(x-3)中的(x-3)看成一个因式合并同类项,结果应是
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A.-4(x-3)2+(x-3)
B.4(x-3)2-x(x-3)
C.4(x-3)2-(x-3)
D.-4(x-3)2-(x-3)