摘要: -My bike is broken. May I go yours? -Sorry, mine broken down. A. on, is B. by, is C. on, has D. by, has
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下列因式分解中,错误的是( )
| A、1-9x2=(1+3x)(1-3x) | ||||
B、a2-a+
| ||||
| C、-mx+my=-m(x+y) | ||||
| D、ax-ay-bx+by=(x-y)(a-b) |