1.64x^3+12.81-27y^33.3x^3-244.(p^n+3)-p^n5.(a^n+6)+a^n6.(x-y)^3+8y^37.(a+b)^3-b^38.(x^3-1)(x^3+1)-89.1-8(x+y)^310.a^6-b^611.3x^9 - 192 x^3 y^612.1+1/8a^3b^3^是根号.

3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 1.64x^3+12.81-27y^33.3x^3-244.(p^n+3)-p^n5.(a^n+6)+a^n6.(x-y)^3+8y^37.(a+b)^3-b^38.(x^3-1)(x^3+1)-89.1-8(x+y)^310.a^6-b^611.3x^9 - 192 x^3 y^612.1+1/8a^3b^3^是根号. (3x-y)(3y+x)-(x-y)(x+y) (x-y)^2-(x-y)^3因式分解2、（x+y）^2-（x+y）^33、（x-y）^2-（y-x）^3 36a^3(x-y)^2/27a(y-x) 1.5（x+y）+3（x-y）=27（x+y）-3（x-y）=-62.x-y/7 - x+y/10 =1/22(x-y)-5(x+y)=3所谓细节决定成败, 3x+4y=100 x+y=33 x+Y=33 求x和y的值, x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=? x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=? 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快 (2x+y)（2x-3y)+x（2x+y） 因式分解8^2(2x^2-y^2）+y^4 3x^2-27 2x+3y=6 33x+77y=25x-y=? x+y=33,x*3+y*4=100,求x与y的值 (3x-2y)^2-(27x^3-8y^3)/(3x-2y) x+y=27 3y+x=3 请问x和y各是多少 2^x=4^(y-1) 27^y=3^(x+1)求x-y x+y/2=z+x/3=y+z/4 x+y+z=27