(m n^2)^2-m^2n^2 因式分解,还有几道题,1.(m n^2)^2-m^2n^2 2.(a+b)^2-(a-2b)^2 3.(m^2-y^2)^2-(m-y)^2 4.x^2-y^2-x+y

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(m n^2)^2-m^2n^2 因式分解,还有几道题,1.(m n^2)^2-m^2n^2 2.(a+b)^2-(a-2b)^2 3.(m^2-y^2)^2-(m-y)^2 4.x^2-y^2-x+y
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(m n^2)^2-m^2n^2 因式分解,还有几道题,1.(m n^2)^2-m^2n^2 2.(a+b)^2-(a-2b)^2 3.(m^2-y^2)^2-(m-y)^2 4.x^2-y^2-x+y
(m n^2)^2-m^2n^2 因式分解,还有几道题,
1.(m n^2)^2-m^2n^2 2.(a+b)^2-(a-2b)^2 3.(m^2-y^2)^2-(m-y)^2 4.x^2-y^2-x+y

(m n^2)^2-m^2n^2 因式分解,还有几道题,1.(m n^2)^2-m^2n^2 2.(a+b)^2-(a-2b)^2 3.(m^2-y^2)^2-(m-y)^2 4.x^2-y^2-x+y
(m+n^2)^2-m^2n^2
=(m+n²+mn)(m+n²-mn)
(a+b)^2-(a-2b)^2
=(a+b+a-2b)(a+b-a+2b)
=3b(2a-b)
(m^2-y^2)^2-(m-y)^2
=(m+y)²(m-y)²-(m-y)²
=(m-y)²[(m+y)-1]
=(m-y)²(m+y+1)(m+y-1)
x^2-y^2-x+y
=(x+y)(x-y)-(x-y)
=(x+y-1)(x-y)
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