初一因式分解计算计算:1.(a+2b-3c)(a-2b+3c)2.(x-2y+z)(-x+2y+z)3.(-1/3xy+
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初一因式分解计算
计算:
1.(a+2b-3c)(a-2b+3c)
2.(x-2y+z)(-x+2y+z)
3.(-1/3xy+3/2y^2-x^2)(-6xy^2)^2
4.(x+1)(x^2+1)(x^4+1)(x-1)
计算:
1.(a+2b-3c)(a-2b+3c)
2.(x-2y+z)(-x+2y+z)
3.(-1/3xy+3/2y^2-x^2)(-6xy^2)^2
4.(x+1)(x^2+1)(x^4+1)(x-1)
1.(a+2b-3c)(a-2b+3c)
=(a+(2b-3c))(a-(2b-3c))
=a^2-(2b-3c)^2
=a^2-(4b^2+9c^2-12bc)
=a^2-4b^2-9c^2+12bc
2.(x-2y+z)(-x+2y+z)
=(z+(x-2y))(z-(x-2y))
=z^2-(x-2y)^2
=z^2-x^2-4y^2+4xy
3.(-1/3xy+3/2y^2-x^2)(-6xy^2)^2
4.(x+1)(x^2+1)(x^4+1)(x-1)
=(a+(2b-3c))(a-(2b-3c))
=a^2-(2b-3c)^2
=a^2-(4b^2+9c^2-12bc)
=a^2-4b^2-9c^2+12bc
2.(x-2y+z)(-x+2y+z)
=(z+(x-2y))(z-(x-2y))
=z^2-(x-2y)^2
=z^2-x^2-4y^2+4xy
3.(-1/3xy+3/2y^2-x^2)(-6xy^2)^2
4.(x+1)(x^2+1)(x^4+1)(x-1)
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