来自胡国平的问题
化简:(1)[(x+2y)(x-2y)-(2x-y)2+(3x-y)(2x-5y)]÷(-12x);(2)(-4x2+12x3y2-16x4y3)÷(-4x2)-(-2xy2-y)(-2xy-1).
化简:
(1)[(x+2y)(x-2y)-(2x-y)2+(3x-y)(2x-5y)]÷(-12x);
(2)(-4x2+12x3y2-16x4y3)÷(-4x2)-(-2xy2-y)(-2xy-1).
1回答
2020-06-18 15:09