非常基础的分解因式(2x+y)^2-9(x+2y)^2=_____________ x^2-y^2-x-y=_____________ (x^2+y^2)^2-x^2y^2=______________ a^m-a^(m-2)=__________ x^2-y^2=11的整数解是_____

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非常基础的分解因式(2x+y)^2-9(x+2y)^2=_____________ x^2-y^2-x-y=_____________ (x^2+y^2)^2-x^2y^2=______________ a^m-a^(m-2)=__________ x^2-y^2=11的整数解是_____
非常基础的分解因式
(2x+y)^2-9(x+2y)^2=_____________
x^2-y^2-x-y=_____________
(x^2+y^2)^2-x^2y^2=______________
a^m-a^(m-2)=__________
x^2-y^2=11的整数解是_____

非常基础的分解因式(2x+y)^2-9(x+2y)^2=_____________ x^2-y^2-x-y=_____________ (x^2+y^2)^2-x^2y^2=______________ a^m-a^(m-2)=__________ x^2-y^2=11的整数解是_____
-(5x+7y)(x+5y)
(x+y)(x-y-1)
(x^2+y^2+xy)(x^2+y^2-xy)
a^(m-2)(a+1)(a-1)
x^2-y^2=11的整数解是x=6,y=5或x=-6,y=-5或x=6,y=-5或x=-6,y=5

(2x+y)^2-9(x+2y)^2=-(5x+7y)(x+5y)______________
x^2-y^2-x-y=_(x+y)(x-y-1)____________
(x^2+y^2)^2-x^2y^2=___(x^2+y^2+xy)(x^2+y^2-xy)___________
a^m-a^(m-2)=_a^m_(1-1/a)(1+1/a)________
x^2-y^2=11的整数解是x=6,y=-5_____

-(5x+7y)(x+5y)
(x+y)(x-y-1)
(x^2+y^2+xy)(x^2+y^2-xy)
a^(m-2)(a+1)(a-1)
(x+y)(x-y)=11=1*11... 整数解为x=6,y=5.

你怎么学的

-(x+5*y)*(5*x+7*y)
(x+y)*(x-1-y)
(y^2-x*y+x^2)*(x^2+x*y+y^2)
a^(m-2)*(a+1)*(a-1)
x=6,y=5或x=-6,y=-5或x=6,y=-5或x=-6,y=5