1.ax⑵y⑵-az⑵ 2.(b-c)-2a(c-b) 3.m⑵(m-1)-4(1-m)⑵ 4.4a⑵-(a⑵+1)⑵ 5.1-a⑵+ab-4分之1b⑵ 6.x⑶-x⑵y-xy⑵+y⑶ 7.(x⑵+4x)⑵-8(x⑵+4x)+16 8.(x+2)(x-2)-4y(x-y)
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1.ax⑵y⑵-az⑵ 2.(b-c)-2a(c-b) 3.m⑵(m-1)-4(1-m)⑵ 4.4a⑵-(a⑵+1)⑵ 5.1-a⑵+ab-4分之1b⑵ 6.x⑶-x⑵y-xy⑵+y⑶ 7.(x⑵+4x)⑵-8(x⑵+4x)+16 8.(x+2)(x-2)-4y(x-y)
1.ax⑵y⑵-az⑵
2.(b-c)-2a(c-b)
3.m⑵(m-1)-4(1-m)⑵
4.4a⑵-(a⑵+1)⑵
5.1-a⑵+ab-4分之1b⑵
6.x⑶-x⑵y-xy⑵+y⑶
7.(x⑵+4x)⑵-8(x⑵+4x)+16
8.(x+2)(x-2)-4y(x-y)
1.ax⑵y⑵-az⑵ 2.(b-c)-2a(c-b) 3.m⑵(m-1)-4(1-m)⑵ 4.4a⑵-(a⑵+1)⑵ 5.1-a⑵+ab-4分之1b⑵ 6.x⑶-x⑵y-xy⑵+y⑶ 7.(x⑵+4x)⑵-8(x⑵+4x)+16 8.(x+2)(x-2)-4y(x-y)
1.ax⑵y⑵-az⑵
=a(x^2y^2-z^2)
=a(xy+z)(xy-z)
2.(b-c)-2a(c-b)
=(b-c)+2a(b-c)
=(2a+1)(b-c)
3.m⑵(m-1)-4(1-m)⑵
=(m-1)(m^2-4m+4)
=(m-1)(m-2)^2
4.4a⑵-(a⑵+1)⑵
=(2a+a^2+1)(2a-a^2-1)
=-(a+1)^2(a-1)^2
5.1-a⑵+ab-4分之1b⑵
=1-(a-b/2)^2
=(1+a-b/2)(1-a+b/2)
6.x⑶-x⑵y-xy⑵+y⑶
=x^2(x-y)-y^2(x-y)
=(x-y)(x^2-y^2)
=(x-y)^2(x+y)
7.(x⑵+4x)⑵-8(x⑵+4x)+16
=(x^2+4x-4)^2
8.(x+2)(x-2)-4y(x-y)
=x^2-4-4xy+4y^2
=(x-2y)^2-4
=(x-2y+2)(x-2y-2)