计算 (-2xy)×(xy) (2a+3b)(2a-b) 5x(x+1)计算(-2xy)×(xy)(2a+3b)(2a-b)5x(x+1)(x-1)(2x+y-1)59.8×60.2198
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计算(-2xy)×(xy)(2a+3b)(2a-b)5x(x+1)计算(-2xy)×(xy)(2a+3b)(2a-b)5x(x+1)(x-1)(2x+y-1)59.8×60.2198计算(-2xy)×
计算 (-2xy)×(xy) (2a+3b)(2a-b) 5x(x+1)计算(-2xy)×(xy)(2a+3b)(2a-b)5x(x+1)(x-1)(2x+y-1)59.8×60.2198
计算 (-2xy)×(xy) (2a+3b)(2a-b) 5x(x+1)
计算
(-2xy)×(xy)
(2a+3b)(2a-b)
5x(x+1)(x-1)
(2x+y-1)
59.8×60.2
198
计算 (-2xy)×(xy) (2a+3b)(2a-b) 5x(x+1)计算(-2xy)×(xy)(2a+3b)(2a-b)5x(x+1)(x-1)(2x+y-1)59.8×60.2198
计算:3xy-4xy-(-2xy)要过程
计算:3xy-4xy-(-2xy)3xy-4xy-(-2xy)-1/3ab-1/4a²+1/3a²-(-2/3ab)
3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
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(1)3xy-4xy-(-2xy)
xy-3xy+2xy-xy
(-3xy+2xy)-(4xy+xy)