来自田立勤的问题
求帮忙做几道数学计算题-2^3-(-2)^2+(-3)^2-(-1)^3(-2xy^2)^2(-0.5x^2y^3)(-2/3x^2y^3)(x-2y+1)(x+2y-1)5*399/8+5*1/8(x-2y)(x+2y)(x^2-4y^2)
求帮忙做几道数学计算题
-2^3-(-2)^2+(-3)^2-(-1)^3
(-2xy^2)^2(-0.5x^2y^3)(-2/3x^2y^3)
(x-2y+1)(x+2y-1)
5*399/8+5*1/8
(x-2y)(x+2y)(x^2-4y^2)
1回答
2020-04-05 22:06