计算：(6x+5y)^2-(6x-5y)^2因式分解：(6x+5y)^2-(6x-5y)^2

计算 （x-2y)^6÷（2y-x)^5 计算：5x-2y-6+ (1/x) + (1/y) 计算:(x-y)^2*(y-x)^2*(x-y)^6 (计算方程组x+y)/2=6-(x-y)/3,6(x+y)-5(x-y)=18 计算:(x+y)^2×(-x-y)^3×[-3/4(x-y)^3]×5/6(y-x)^2 计算:(x+y)^2×(-x-y)^3×[-3/4(x-y)^3]×5/6(y-x)^2 2(x+y-z)-3(x-y+z)-5(x+y-z)+6(x-y+z) 计算 计算：(x+2y)(3x-5y)-(6x的四次方y²-2x²y²）÷（2x²y²） 3x+2=y 5X+4=Y 7X+6=Y 9X+8=y 11x=y要如何计算 计算：(x-5y)^2 计算：x(x-3y)(5x-2y) 计算.2x÷x/5x+3y^2-4y+4/2y-6·1/y+3÷12-6y/9-y^2 计算： [(2x-y)(2x+y)+y(y+6x)]/2x 要详细过程 计算：(x-y)^7÷(y-x)^6+(-x-y)^3÷(x+y)^2 计算(x-y)^7÷(y-x)^6+9-x-y)^3÷(x+y)^2 计算[(x+2y)²-(x+y)(x-y)-5y²]÷(2x) [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2 计算：6x²y+2xy-3x²y²-7x-5yx-4y²x²-6x²y