1.（-xy)^4
2. x^m*x^2*x^n
3. (2*(x-y))^4
4. (-2x^3*y^4)^3
5. x^2+(y-x)*(y+x)
6. (m+n)^3*(-m-n)^2*(m+n)
1.X^4*Y^4
2.x^(m+n+2)
3.(2^4)*(X-Y)^4=64*(X-Y)^4=64*(X^4-4*X^3*Y-4*X*Y^3+6*X^2*Y^2+Y^4)
4.-8*X^9*Y^12
5.Y^2
6.(m+n)^6
2.x^(m+n+2)
3.(2^4)*(X-Y)^4=64*(X-Y)^4=64*(X^4-4*X^3*Y-4*X*Y^3+6*X^2*Y^2+Y^4)
4.-8*X^9*Y^12
5.Y^2
6.(m+n)^6
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第1个回答 2007-08-11
1.x^4*y^4
2.x^(m+2+n)
3.2^4*(x-y)^4=64x-64Y
后面太麻烦
2.x^(m+2+n)
3.2^4*(x-y)^4=64x-64Y
后面太麻烦
