求(x+y)(x-y)(x的2次方+y的2次方)的值,其中x=5,y=2我想要过程,请快点!答案是609!

y=(1+x^2)的x次方,求y ' (y-x)²(x-y)+(x-y)的三次方+2(x-y)²(y-x) {(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y (y-x)的二次方(x-y)+(x-y)的三次方+2(x-y)的二次方(y-x)在线等,秒回答案已有,求大神讲解 x-y+x+y分之2y的2次方 已知x=y+2,求[(x+y)(x-y)-(x-y)的2次方+2y(x-y)]÷4y的值 (x-1)*(x-1)+(y+2)*(y+2)=0求(x+y)的2010次方 若|x-2y+6|+(x+y+12)的2次方,求4x+5y (x-y)的5次方-(y-x)的2次方, 求(x+y)(x-y)-(x-y)的二次方,的值.其中x=5.y=2 x(x-y)的二次方-2(y-x)的三次方求因式分解 若x+y=-6,求[(x+y)的2次方-(x-y)的2次方+2y(y-x)]乘以1分之4y (x-y)的2次方-2(x-y)+(x-y)-5(x-y) (x-y)的四次方(x-y)-2(x-y)²(y-x）³等于? 已知x²-y²=10,求[(x+y)的三次方-2y(x+y)²-4(x+y)]÷(x+y)的值 x/(x+y)(x-y)的三次方,y/(y+x)(y-x)的平方通分 若x=2,y=1,求x(x的2次方+xy+y的2次方)-y(x的2次方+xy+y的2次方) (-x+2y)(x的4次方+4x的2次方y的2次方+16y的4次方)(x+2y) ,求因式分解