1.(-2a^2)^3-6a^2*a^4呵呵,再多几道(3x+1)^2(3x-1)^2(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)(2a+b-3)(2a-b-3)-a·a^5-(a^2)^3-(-2a^3)^23x^2·x^n-2+3(-x)^2·x^n-3·(-x)(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4如果
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![1.(-2a^2)^3-6a^2*a^4呵呵,再多几道(3x+1)^2(3x-1)^2(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)(2a+b-3)(2a-b-3)-a·a^5-(a^2)^3-(-2a^3)^23x^2·x^n-2+3(-x)^2·x^n-3·(-x)(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4如果](/uploads/image/z/14056692-60-2.jpg?t=1.%EF%BC%88-2a%5E2%29%5E3-6a%5E2%2Aa%5E4%E5%91%B5%E5%91%B5%EF%BC%8C%E5%86%8D%E5%A4%9A%E5%87%A0%E9%81%93%EF%BC%883x%2B1%29%5E2%283x-1%29%5E2%283x-4y%29%5E2-%283x%2B4y%29%5E2-%284x%2B3%29%EF%BC%884x-3%29%282a%2Bb-3%29%282a-b-3%29-a%C2%B7a%5E5-%28a%5E2%EF%BC%89%5E3-%28-2a%5E3%29%5E23x%5E2%C2%B7x%5En-2%2B3%EF%BC%88-x%29%5E2%C2%B7x%5En-3%C2%B7%28-x%29%28-3%2A3%5E-2%29%5E-3-%28-3%5E2%29%5E2%2F3%5E2%2A2005%5E0%E5%B7%B2%E7%9F%A5a-1%2Fa%3D1%EF%BC%8C%E6%B1%82a%5E2%2B1%2Fa%5E2%E5%92%8Ca%5E4%2B1%2Fa%5E4%E5%A6%82%E6%9E%9C)
1.(-2a^2)^3-6a^2*a^4呵呵,再多几道(3x+1)^2(3x-1)^2(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)(2a+b-3)(2a-b-3)-a·a^5-(a^2)^3-(-2a^3)^23x^2·x^n-2+3(-x)^2·x^n-3·(-x)(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4如果
1.(-2a^2)^3-6a^2*a^4
呵呵,再多几道
(3x+1)^2(3x-1)^2
(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)
(2a+b-3)(2a-b-3)
-a·a^5-(a^2)^3-(-2a^3)^2
3x^2·x^n-2+3(-x)^2·x^n-3·(-x)
(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0
已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4
如果x^2+x-1=0,求x^3+2x^2+3
1.(-2a^2)^3-6a^2*a^4呵呵,再多几道(3x+1)^2(3x-1)^2(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)(2a+b-3)(2a-b-3)-a·a^5-(a^2)^3-(-2a^3)^23x^2·x^n-2+3(-x)^2·x^n-3·(-x)(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4如果
(-2a^2)^3-6a^2*a^4
=-8a^6-6a^6
=-14a^6
(3x+1)^2(3x-1)^2
=[(3x+1)(3x-1)]^2
=(9x^2-1)^2
=81x^4-18x^2+1
(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)
=(3x-4y+3x+4y)(3x-4y-3x-4y)-(16x^2-9)
=-48xy-16x^2+9
(2a+b-3)(2a-b-3)
=[(2a-3)+b][(2a-3)-b]
=(2a-3)^2-b^2
=4a^2-12a+9-b^2
-a·a^5-(a^2)^3-(-2a^3)^2
=-a^6-a^6-4a^6
=-6a^6
3x^2·x^n-2+3(-x)^2·x^n-3·(-x)
=3x^n-3^n
=0
(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0
=-3^3-3^2
=-27-9
=-36
已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4
a^2+1/a^2
=(a-1/a)^2+2
=1^2+2
=3
a^4+1/a^4
=(a^2+1/a^2)^2-2
=3^2-2
=9-2
=7
如果x^2+x-1=0,求x^3+2x^2+3
因为x^2+x-1=0
所以x^2=1-x
x^2+x=1
所以x^3+2x^2+3
=x^2(x+2)+3
=(1-x)(x+2)+3
=-x^2-x+2+3
=-(x^2+x)+5
=-1+5
=4
(-2a^2)^3-6a^2*a^4
=-8a^6-6a^6
=-14a^6
1.(-2a^2)^3-6a^2*a^4
=-8a^6-6a^6
=-14a^6
(3x+1)^2(3x-1)^2
=[(3x+1)(3x-1)]^2
=(9x^2-1)^2
=81x^4-18x^2+1
(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)
=(3x-4y+3x+4y)(3x-4y-3x-...
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1.(-2a^2)^3-6a^2*a^4
=-8a^6-6a^6
=-14a^6
(3x+1)^2(3x-1)^2
=[(3x+1)(3x-1)]^2
=(9x^2-1)^2
=81x^4-18x^2+1
(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)
=(3x-4y+3x+4y)(3x-4y-3x-4y)-(16x^2-9)
=-48xy-16x^2+9
(2a+b-3)(2a-b-3)
=[(2a-3)+b][(2a-3)-b]
=(2a-3)^2-b^2
=4a^2-12a+9-b^2
-a·a^5-(a^2)^3-(-2a^3)^2
=-a^6-a^6-4a^6
=-6a^6
3x^2·x^n-2+3(-x)^2·x^n-3·(-x)
=3x^n-3^n
=0
(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0
=-3^3-3^2
=-27-9
=-36
已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4
a^2+1/a^2
=(a-1/a)^2+2
=1^2+2
=3
a^4+1/a^4
=(a^2+1/a^2)^2-2
=3^2-2
=9-2
=7
如果x^2+x-1=0,求x^3+2x^2+3
因为x^2+x-1=0
所以x^2=1-x
x^2+x=1
所以x^3+2x^2+3
=x^2(x+2)+3
=(1-x)(x+2)+3
=-x^2-x+2+3
=-(x^2+x)+5
=-1+5
=4
2.(3x+1)^2(3x-1)^2
(3x-4y)^2-(3x+4y)^2-(4x+3)(4x-3)
(2a+b-3)(2a-b-3)
-a·a^5-(a^2)^3-(-2a^3)^2
3x^2·x^n-2+3(-x)^2·x^n-3·(-x)
(-3*3^-2)^-3-(-3^2)^2/3^2*2005^0
已知a-1/a=1,求a^2+1/a^2和a^4+1/a^4
如果x^2+x-1=0,求x^3+2x^2+3
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