化简求值:(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/3ab^3)^2,其中a=1/2,b=-4
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/26 18:49:48
化简求值:(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/3ab^3)^2,其中a=1/2,b=-4化简求值:(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)
化简求值:(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/3ab^3)^2,其中a=1/2,b=-4
化简求值:(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/3ab^3)^2,其中a=1/2,b=-4
化简求值:(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/3ab^3)^2,其中a=1/2,b=-4
(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/3ab^3)^2
=(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/9a^2b^6)
=3/4a^4b^7÷(-1/9a^2b^6)+1/18a^3b^8÷(-1/9a^2b^6)-1/9a^2b^6÷(-1/9a^2b^6)
=-27/4a^2b-1/2ab^2+1
=27/4-4+1
=15/4
(3/4a^3+1/2a^3b^3-1/9a^2b^4)/(-1/3ab)^2
=(a^2/36)(27a+18ab^3-4b^4)/(1/9a^2b^2)
=(27a+18ab^3-4b^4)/4b^2
=27a/4b^2+9ab/2-b^2
=27*(1/2)/4*(-4)^2+9*(1/2)*4/2-(-4)^2
=27/128-7
=-869/128
3a+2b-[a-(4a-3b)],其中a=-1,b=3化简求值
化简求值:(a-2b)(a^2+2ab+4b^2)-a(a-5b)(a+3b),a=-1,b=1
b+1/a2-4/b2+2b+1/a+2 a=3,b=-2 化简求值
因式分解4A2-4AB+B2 化简求值A(5+B)-3A (A=4 B=-1)
化简求值:(a-b+a-b/4ab)*(a+b-a+b/4ab),a=2/3,b=-2/1
化简求值:(a-b)(a^2+ab+b^2)+b^2(a+b)-a^3,其中a=-1/4,b=2
化简与求值:5(3a-b)-4(-a+3b)=多少
5(3a+b)-4(-a+3b) 化简和求值
求5(3a-b)-4(-a+3b)化简与求值,
化简求值:(1/4a^2-b^2)【ab-(1/2a+b)^2】
化简求值:(3/4a^4b^7+1/18a^3b^8-1/9a^2b^6)÷(-1/3ab^3)^2,其中a=1/2,b=-4
化简求值[(a-b)^2-(a+2b)(a-2b)]/(-4b)其中a=7/3,b=-2/3
化简求值:-6(a-b)^2十7(a-b)^2-4(b-a)^2,其中a-b=-3
化简求值:(b+a)(-b+a)+(4ab^3-8a^2b^2)÷4ab a=2 b=-1
化简求值:[(1/2a-b)^2+(1/2a+b)^2]`(2a^2-1/2b^2),其中a=-3,b=4
化简求值:5abc-{2a^2b-[3abc-(4a^2b-a^2b]}其中a=-2,b=-1,c=四分之一
化简求值,(a+2b)^2—(a-b)(a-4a)其中a=1/3,b=2
化简求值:5 (3a-b) -3 (-a+3b),其中a =1/9 b =1/7