因式分解:36x²+40xy+25y²(2)1/4x²+1/3xy+1/9y²(3)(x-y)²-2(x-y)+1(4)(x+1)²-4x(x+1)+4x²(5)9(m+1)²-6(m+1)+1(6)3a的3n次方-12a的2n次方+12a的n次方b²

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因式分解:36x²+40xy+25y²(2)1/4x²+1/3xy+1/9y²(3)(x-y)²-2(x-y)+1(4)(x+1)²-4x(x+1)+4x²(5)9(m+1)²-6(m+1)+1(6)3a的3n次方-12a的2n次方+12a的n次方b²
因式分解:36x²+40xy+25y²(2)1/4x²+1/3xy+1/9y²
(3)(x-y)²-2(x-y)+1
(4)(x+1)²-4x(x+1)+4x²
(5)9(m+1)²-6(m+1)+1
(6)3a的3n次方-12a的2n次方+12a的n次方b²

因式分解:36x²+40xy+25y²(2)1/4x²+1/3xy+1/9y²(3)(x-y)²-2(x-y)+1(4)(x+1)²-4x(x+1)+4x²(5)9(m+1)²-6(m+1)+1(6)3a的3n次方-12a的2n次方+12a的n次方b²
(1)36x²+40xy+25y²
不好分解额
(2)1/4x²+1/3xy+1/9y²
=(x/2+y/3)²

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