数学计算填空

问题描述:

数学计算填空
(5x+y)(5x-y)
(5x+y)(-5x+y)
(5x+y)(-5x-y)
(5x+y)(x-5y)
(x ^m+y ^n) (y ^n- x^ m)
(x ^m+2y-3x^3)²
(x-2y)(______)=4y²-x²
(__________)²=m²-2m+1(只需要写一个代数式)
(__________+3)²=4x²+(_______)(每格内只需要填一个代数式)
(x+y)(x²-y²)(x-y)
(1-a)²(1+a)²(1+a²)²
全部算出来了我会给分的
做出来了我就可以当上第一批入团队员了!

1.25x²-y²2.-25x²+y²3.-(25x²+10xy+y²)4.5x²-24xy-5y²5.y^2n-x^2m6.x^2m+4x^my+4y^2-6x^(m+3)-6x^3y+9x^67.(-x-4y)8.(m-1)9.2x,12x+910.(x²-y²)^211.(1+a²)...