(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)

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(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)(

(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)
(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)

(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)
(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)
=[x+(4y-6)][x-(4y-6)]-([4y+(x+6)][4y-(x+6)]
=[x^2-(4y-6)^2]-[(4y^2)-(x+6)^2]
=[x^2-(16y^2-48y+36)]-[16y^2-(x^2+12x+36)]
=x^2-16y^2+48y-36-16y^2+x^2+12x+36
=2x^2-32y^2+60y

(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)
=(x+（4y-6)）（(x-（4y-6)）-(4y+（x+6）)(4y-（x+6）)
=x^2-（4y-6)^2-(16y^2-(x+6)^2)
=x^2-（4y-6)^2-16y^2+(x+6)^2
=x^2-(16y^2-48y+36)-16y^2+x^2+12x+36
=2x^2+12x-32y^2+48y

(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)
=(x+4y-6)(x-4y+6)+(4y+x+6)(x-4y+6)
=(x+4y-6+4y+x+6)(x-4y+6)
=(2x+8y)(x-4y+6)
=2(x+4y)(x-4y+6)

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问题是啥呀？因式分解还是积化和差，都做一下吧
(x+4y-6)(x-4y+6) - (4y+x+6)(4y-x-6)
=(x+4y-6)(x-4y+6) + (4y+x+6)(x-4y+6)
=(x+4y-6 + 4y+x+6)(x-4y+6)
=(2x+8y)(x-4y+6)
=2(x+4y)(x-4y+6)
(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6)
=[x+(4y-6)][x-(4y-6)] - ([4y+(x+6)][4y-(x+6)]
=[x^2 - (4y-6)^2] - [(4y^2) - (x+6)^2]
=[x^2 - (16y^2-48y+36)] - [16y^2 - (x^2+12x+36)]
=x^2-16y^2+48y-36 -16y^2+x^2+12x+36
=2x^2 - 32y^2 + 60y

收起

(x+4y-6)(x-4y+6)-(4y+x+6)(4y-x-6) (3x-4y)(5x-4y)-(7x-8y)(6y-5x) {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2 4x-3y/x-2y÷6y-8x/y-2x （x+y）^6/(x+y)^4-(x-y)^5/(x-y)^3 化简 .. x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20 {(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20 4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6 （x+y）/2- x-y/2=6 3(x+y)=4(x-y) x+y/3+x-y/2=6 4(x+y)-2(x-y)=40 （y-x）^4（x-y）^3+2（x-y）^6（y-x） -4(x-y)平方-(x-y)+3(y-x)+6(y-x)平方化简 (x+y)(x-y)+4(y-1) 6q(p-q)-4p(p+q) x(x-y)²-y(y-x)² x(x+y)(x-y)-x(x+y)² [6(2X-Y)^3-4Y(Y-2X)^2]/2(Y-2X)^2 1.（（y+2x)(-2x+y)+4(x+2y)^2)/3y 2.（2(x-y)^3-8(x-y）^2(x+y)+6y(x-y)^2）/2（x-y)^2 [(x+2y)(x-2y)+4(x-y)^2-6x]/(6x)计算