因式分解,2x^2-4x,x^2y^2-y^2,3a^2-6a+3,81x^4-y^4,
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因式分解,2x^2-4x,x^2y^2-y^2,3a^2-6a+3,81x^4-y^4,因式分解,2x^2-4x,x^2y^2-y^2,3a^2-6a+3,81x^4-y^4,因式分解,2x^2-4x
因式分解,2x^2-4x,x^2y^2-y^2,3a^2-6a+3,81x^4-y^4,
因式分解,2x^2-4x,x^2y^2-y^2,3a^2-6a+3,81x^4-y^4,
因式分解,2x^2-4x,x^2y^2-y^2,3a^2-6a+3,81x^4-y^4,
2x^2-4x
=2x·x-2x·2
=2x·(x-2)
x^2y^2-y^2
=y^2·(x^2-1)
=y^2·(x-1)(x+1)
3a^2-6a+3
=3·(a^2-2a+1)
=3(a-1)^2
81x^4-y^4
=(9x^2-y^2)(9x^2+y^2)
=(3x-y)(3x+y)(9x^2+y^2)
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2x^2-4x
=2x(x-2)
x^2y^2-y^2
=y²(x²-1)
=y²(x+1)(x-1)
3a^2-6a+3
=3(a²-2a+1)
=3(a-1)²
81x^4-y^4
=(9x²+y²)(9x²-y²)
=(9x...
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2x^2-4x
=2x(x-2)
x^2y^2-y^2
=y²(x²-1)
=y²(x+1)(x-1)
3a^2-6a+3
=3(a²-2a+1)
=3(a-1)²
81x^4-y^4
=(9x²+y²)(9x²-y²)
=(9x²+y²)(3x+y)(3x-y)
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