Question

[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)请帮我一下写两道计算题？

Answer 1

1、
=(x²-y²-x²+2xy-y²+2xy-2y²)÷(4y)
=(4xy-4y²)÷4y
=x-y
2、
=(9x²-4y²-5x²-8xy+4y²)÷4x
=(4x²-8xy)÷4x
=x-2y,2,[(x+y)(x-y)-(x-y)的平方+2y(x-y)]÷(4y)
=(x-y)[(x+y)-(x-y)+2y]÷(4y)
=(x-y)[x+y-x+y+2y]÷(4y)
=4y(x-y)÷(4y)
=x-y
[（3x+2y）（3x-2y）-（x+2y）（5x-2y）]÷ （4x）
=[(9x平方-4y平方）-（5x平方+8xy-4y平方)]÷ （...,2,[(x+y)(x-y)-(x-y)^2+2y(x-y)]/(4y)
=[x^2-y^2-(x^2-2xy+y^2)+2xy-2y^2]/(4y)
=(x^2-y^2-x^2+2xy-y^2+2xy-2y^2)
=(4xy-4y^2)/(4y)
=(x-y) (y≠0)
[（3x+2y）（3x-2y）-（x+2y）（5x-2y）]/（4x）...,0,[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)请帮我一下写两道计算题
[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)
[（3x+2y）（3x-2y）-（x+2y）（5x-2y）]除以（4x）