作业帮x^25÷[(-x^2)^3]^4·(-x^3)^2÷(-x^2)^5(a-b)^5·(b-a)^2÷(b-a)^3地球体积约为1.1×10^12平方米月球体积约为2.2×10^10平方米问地球是月球体积多少倍?先化简再求值a^3(-b^3)^2+(-1/2ab^2)^3其中a=0.25 b=4做好了就给分.
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 11:07:44
![x^25÷[(-x^2)^3]^4·(-x^3)^2÷(-x^2)^5(a-b)^5·(b-a)^2÷(b-a)^3地球体积约为1.1×10^12平方米月球体积约为2.2×10^10平方米问地球是月球体积多少倍?先化简再求值a^3(-b^3)^2+(-1/2ab^2)^3其中a=0.25 b=4做好了就给分.](/uploads/image/z/10370085-69-5.jpg?t=x%5E25%C3%B7%5B%28-x%5E2%29%5E3%5D%5E4%C2%B7%28-x%5E3%29%5E2%C3%B7%28-x%5E2%29%5E5%28a-b%29%5E5%C2%B7%28b-a%29%5E2%C3%B7%28b-a%29%5E3%E5%9C%B0%E7%90%83%E4%BD%93%E7%A7%AF%E7%BA%A6%E4%B8%BA1.1%C3%9710%5E12%E5%B9%B3%E6%96%B9%E7%B1%B3%E6%9C%88%E7%90%83%E4%BD%93%E7%A7%AF%E7%BA%A6%E4%B8%BA2.2%C3%9710%5E10%E5%B9%B3%E6%96%B9%E7%B1%B3%E9%97%AE%E5%9C%B0%E7%90%83%E6%98%AF%E6%9C%88%E7%90%83%E4%BD%93%E7%A7%AF%E5%A4%9A%E5%B0%91%E5%80%8D%3F%E5%85%88%E5%8C%96%E7%AE%80%E5%86%8D%E6%B1%82%E5%80%BCa%5E3%28-b%5E3%29%5E2%2B%28-1%2F2ab%5E2%29%5E3%E5%85%B6%E4%B8%ADa%3D0.25+b%3D4%E5%81%9A%E5%A5%BD%E4%BA%86%E5%B0%B1%E7%BB%99%E5%88%86.)
x^25÷[(-x^2)^3]^4·(-x^3)^2÷(-x^2)^5(a-b)^5·(b-a)^2÷(b-a)^3地球体积约为1.1×10^12平方米月球体积约为2.2×10^10平方米问地球是月球体积多少倍?先化简再求值a^3(-b^3)^2+(-1/2ab^2)^3其中a=0.25 b=4做好了就给分.
x^25÷[(-x^2)^3]^4·(-x^3)^2÷(-x^2)^5
(a-b)^5·(b-a)^2÷(b-a)^3
地球体积约为1.1×10^12平方米月球体积约为2.2×10^10平方米问地球是月球体积多少倍?
先化简再求值
a^3(-b^3)^2+(-1/2ab^2)^3其中a=0.25 b=4
做好了就给分.
x^25÷[(-x^2)^3]^4·(-x^3)^2÷(-x^2)^5(a-b)^5·(b-a)^2÷(b-a)^3地球体积约为1.1×10^12平方米月球体积约为2.2×10^10平方米问地球是月球体积多少倍?先化简再求值a^3(-b^3)^2+(-1/2ab^2)^3其中a=0.25 b=4做好了就给分.
x^25÷[(-x^2)^3]^4·(-x^3)^2÷(-x^2)^5
=x^25÷x^24·x^6÷(-x^10)
=x·x^6÷(-x^10)
=x^7÷(-x^10)
=-1/x^3
(a-b)^5·(b-a)^2÷(b-a)^3
=[-(b-a)]^5·(b-a)^2÷(b-a)^3
=-(b-a)^5·(b-a)^2÷(b-a)^3
=-(b-a)^(5+2-3)
=-(b-a)^4
2.2×10^10/1.1×10^12=2*10^-2=0.02
a^3(-b^3)^2+(-1/2ab^2)^3
=a^3*b^6+(-1/8ab^6)
=(ab)^3*b^3+(-1/8ab^6)
a=0.25 b=4 ab=1
原式=1^3*4^3+(-1/8*1^6)
=1*64-1/8
=511/8
x^-3
-(b-a)^4
2*10^-2
7/8a^3b^6=56