计算(-3a)^3-(-a)*(-3a)^2(-3a)^3-(-a)*(-3a)^2(x-y)^2*(x-y)(y-x)^3(5/13)^2004*(-2又3/5)^2005
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/28 20:05:47
![计算(-3a)^3-(-a)*(-3a)^2(-3a)^3-(-a)*(-3a)^2(x-y)^2*(x-y)(y-x)^3(5/13)^2004*(-2又3/5)^2005](/uploads/image/z/3711339-27-9.jpg?t=%E8%AE%A1%E7%AE%97%28-3a%29%5E3-%28-a%29%2A%28-3a%29%5E2%28-3a%29%5E3-%28-a%29%2A%28-3a%29%5E2%28x-y%29%5E2%2A%28x-y%29%28y-x%29%5E3%285%2F13%29%5E2004%2A%28-2%E5%8F%883%2F5%29%5E2005)
计算(-3a)^3-(-a)*(-3a)^2(-3a)^3-(-a)*(-3a)^2(x-y)^2*(x-y)(y-x)^3(5/13)^2004*(-2又3/5)^2005
计算(-3a)^3-(-a)*(-3a)^2
(-3a)^3-(-a)*(-3a)^2
(x-y)^2*(x-y)(y-x)^3
(5/13)^2004*(-2又3/5)^2005
计算(-3a)^3-(-a)*(-3a)^2(-3a)^3-(-a)*(-3a)^2(x-y)^2*(x-y)(y-x)^3(5/13)^2004*(-2又3/5)^2005
(-3a)^3-(-a)*(-3a)^2
=-27a^3+9a^3
=-18a^3
(x-y)^2*(x-y)(y-x)^3
=-(x-y)^2*(x-y)(x-y)^3
=-(x-y)^(2+1+3)
=-(x-y)^6
(5/13)^2004*(-2又3/5)^2005
=(5/13)^2004*(-13/5)^2005
=(5/13)^2004*(-13/5)^2004*(-13/5)
=[5/13*(-13/5)]^2004*(-13/5)
=(-1)^2004*(-13/5)
=1*(-13/5)
=-13/5
(-3a)^3-(-a)*(-3a)^2
=-27a³+9a³
=-18a³
(x-y)^2*(x-y)(y-x)^3
=-(x-y)^6;
(5/13)^2004*(-2又3/5)^2005
=((5/13)(-13/5))^2004*(-13/5)
=-13/5;
(-3a)^3-(-a)*(-3a)^2=-27a^3+6a^3=-21a^3
(x-y)^2*(x-y)(y-x)^3=(x-y)^3*(-(x-y)^3)=-(x-y)^6
(5/13)^2004*(-2又3/5)^2005=(5^2004)/(13^2004)*(-13^2005)/5^2005=-13/5再问两题好吧。。 先减化再求值。。x^2*x^2n*(y^n+1...
全部展开
(-3a)^3-(-a)*(-3a)^2=-27a^3+6a^3=-21a^3
(x-y)^2*(x-y)(y-x)^3=(x-y)^3*(-(x-y)^3)=-(x-y)^6
(5/13)^2004*(-2又3/5)^2005=(5^2004)/(13^2004)*(-13^2005)/5^2005=-13/5
收起