16—8(x-y)+(x—y)^2

16—8(x-y)+(x—y)^2 16-8（x-y)+(x-y)2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 2(x-y)/3—x+y/4=1 6(x+y)—4(2x-y)=16 [(x+y)的平方—(x+y)(x—y)]除以2y怎么算 已知X Y互为相反数,且(X+Y+4)(X—y+2）=8,则x=? 1.20y(2y-x)²与5x(x-2y)平方的公因式是—— 2.分解因式(x+y)(x-y)-(x+y)² 若x-y=1 化简（x+y)(x^2+y^2)(x^4+y^4)(x^8+y^8)(x^16+y^16) 若x+y分之x-y=3,求式子x+y分之5(x-y)—2(x-y)分之x+y的值 若x-y分之x+y=3,求式子x+y分之5(x-y)—2（x-y）分之x+y的值 观察下列代数式的特点:2{x}^{3}y,-4{x}^{4}{y}^{2},8{x}^{5}{y}^{3},-16{{x}^{6}y}^{4},…请写出第七……观察下列代数式的特点:2{x}^{3}y,-4{x}^{4}{y}^{2},8{x}^{5}{y}^{3},-16{{x}^{6}y}^{4},…请写出第七个单项式——,试 x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 —2x+5(x+2y)—(x—3y) 3x+2(y-x)-(-x-4y) (x-2y)-(y-3—2x+5(x+2y)—(x—3y) 3x+2(y-x)-(-x-4y)(x-2y)-(y-3x) 16-8(x-y)+(x-y)平方 (x+y)^2-16(x-y)^2 (x+y)^2-16(x-y)^2 (x-y)²-8(x-y-2) -8(y-x)^2×(x-y)