帮帮忙计算题.1、3x^2×(-3xy)^2-x^2(x^2×y^2-5x)
(2×y+x²-y²)-(x²-y²-3xy) 计算题,
计算题(-3x^2y^2+6x^2y^2-1/3xy)÷(-1/3xy)
计算题:(-3x^2y^3+6x^2y^2-1/3xy)÷(-1/3xy)
几道初二计算题1、2(x-1)²-(x+2)(x-2)2、[x(x²y²-xy)-y(x&
帮个忙,计算题1.(x^2-6xy+9y^2)÷(x-3y) 2.4x^5y^3÷{x^4y^3÷[x^3y^2÷(x^
计算题;3x(x²-2x-1)-2x²(x-2)
计算题:3x(x²-3x+2)-x²(3x-1)
计算题:(-2x+3y)^2
一道计算题:(2x^3y^2-3x^2y+4xy^3)/(-2x)/(-y)
计算题(2x+y)(x+2y)-(2x+3y)(3x-2y)
有这样一道计算题:“计算(2x³-3x²y-2xy²)-(x³-2xy²
有这样一道计算题:“计算(2x²-3x²y-2xy²)-(x²-2xy²