25(2x+y)^2-16(x-2y)^2
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25(2x+y)^2-16(x-2y)^225(2x+y)^2-16(x-2y)^225(2x+y)^2-16(x-2y)^225(2x+y)^2-16(x-2y)^2=[5(2x+y)+4(x-2y
25(2x+y)^2-16(x-2y)^2
25(2x+y)^2-16(x-2y)^2
25(2x+y)^2-16(x-2y)^2
25(2x+y)^2-16(x-2y)^2
=[5(2x+y)+4(x-2y)][5(2x+y)-4(x-2y)]
=(14x-3y)(6x+13y)
=64x^2+164xy-39y^2
原式=(10x+5y+4x-8y)(10x+5y-4x+8y)
=(14x-3y)(6x+13y)
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简y(x+y)+(x+y)(x-y)-x^2
(12-2x)/X=(-16-2Y)/Y X^2+Y^2=25 Y
(x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2
(x+y)^2-16(x-y)^2
(x+y)^2-16(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)
16-8（x-y)+(x-y)2
因式分解x(x+y)(x-y)-x(x+y)^2
[(x-y)^2-(x+2y)(x-2y)]/y
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
x^2(x-y)+(y-x)
x(x-y)2-(y-x)3
【(x-y)^2+(x+y)(x-y)】除以 2x
[(x-y)²+(x+y)(x-y)]除以2x
25(2x+y)^2-16(x-2y)^2
(x-6y)(x+2y)+16y^2 因式分解
（16x^4+y^4)(4x^2+y^2)(2x-y)(2x+y)