分解因式:①a²+2a(b+c)+(c+b)²②m²x²+2m²xy+
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分解因式:①a²+2a(b+c)+(c+b)²②m²x²+2m²xy+m²y²
③(2x-3y)(m+n)+(3x-2y)(m+n)④6x(x+y)³+3(y-x)³
计算(-3a³)²·a³+(-4a)²·a^7-(3a³)³
③(2x-3y)(m+n)+(3x-2y)(m+n)④6x(x+y)³+3(y-x)³
计算(-3a³)²·a³+(-4a)²·a^7-(3a³)³
![分解因式:①a²+2a(b+c)+(c+b)²②m²x²+2m²xy+](/uploads/image/z/9560721-57-1.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9A%E2%91%A0a%26%23178%3B%2B2a%EF%BC%88b%2Bc%EF%BC%89%2B%EF%BC%88c%2Bb%EF%BC%89%26%23178%3B%E2%91%A1m%26%23178%3Bx%26%23178%3B%2B2m%26%23178%3Bxy%2B)
①a²+2a(b+c)+(c+b)²
=a²+2a(b+c)+(b+c)²
=(a+b+c)²
②m²x²+2m²xy+m²y²
=(mx+my)²
③(2x-3y)(m+n)+(3x-2y)(m+n)
=(m+n)(2x-3y+3x-2y)
=(m+n)(5x-5y)
=5(m+n)(x-y)
④6x(x+y)³+3(y-x)³
=6(x^3+3x^2*y+3xy^2+y^3)+3(x^3+3xy^2-3x^2y-y^3)
=9x^3+27xy^2+9x^2y+3y^3
=3(3x^3+9xy^2+3x^2y+y^3)
自己分析一下吧.(-3a³)²·a³+(-4a)²·a^7-(3a³)³
=-3a^9+16a^9-27a^9
=-14a^9
再问: ��2x+1��²-��x+3��²-��x-1��+1�ٰ�æ����
再答: ǰ��ĵ���С����������⣬ʵ���벻���ˡ� ��2x+1��²-��x+3��²-��x-1��+1 ��4x²+4x+1-x²-6x-9-x+1+1 =3x²-3x-6 =(x-1)(3x+6)
=a²+2a(b+c)+(b+c)²
=(a+b+c)²
②m²x²+2m²xy+m²y²
=(mx+my)²
③(2x-3y)(m+n)+(3x-2y)(m+n)
=(m+n)(2x-3y+3x-2y)
=(m+n)(5x-5y)
=5(m+n)(x-y)
④6x(x+y)³+3(y-x)³
=6(x^3+3x^2*y+3xy^2+y^3)+3(x^3+3xy^2-3x^2y-y^3)
=9x^3+27xy^2+9x^2y+3y^3
=3(3x^3+9xy^2+3x^2y+y^3)
自己分析一下吧.(-3a³)²·a³+(-4a)²·a^7-(3a³)³
=-3a^9+16a^9-27a^9
=-14a^9
再问: ��2x+1��²-��x+3��²-��x-1��+1�ٰ�æ����
再答: ǰ��ĵ���С����������⣬ʵ���벻���ˡ� ��2x+1��²-��x+3��²-��x-1��+1 ��4x²+4x+1-x²-6x-9-x+1+1 =3x²-3x-6 =(x-1)(3x+6)
分解因式:①a²+2a(b+c)+(c+b)²②m²x²+2m²xy+
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