计算(2xy-1)(2-3xy)帮我一下,
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计算(2xy-1)(2-3xy)帮我一下,计算(2xy-1)(2-3xy)帮我一下,计算(2xy-1)(2-3xy)帮我一下,(2xy-1)(2-3xy)=4xy-2-6x²y²+
计算(2xy-1)(2-3xy)帮我一下,
计算(2xy-1)(2-3xy)帮我一下,
计算(2xy-1)(2-3xy)帮我一下,
(2xy-1)(2-3xy)
=4xy-2-6x²y²+3xy
=-6x²y²+7xy-2
计算(2xy-1)(2-3xy)帮我一下,
已知(x+1)的平方=/Y-1/=0,求2(xy-xy的平方)-(3xy-xy)的值.哪位高人,来帮我一下,解了这道题!
麻烦帮我解一下-2x平方-12xy平方+8xy立方,
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