①(-2ab)^2(-a)^2+(2ab)^2(-a)3b ②(-4a^2b)^3(ac^2)2-(2a^4c^

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：数学作业时间：2024/05/05 09:37:58

①(-2ab)^2*(-a)^2+(2ab)^2*(-a)3*b ②(-4a^2b)^3*(ac^2)2-(2a^4c^2)*(-a^2b^2)*c
③(-a^5)/(-a)^2+(-3a^2)(-2a)
④6x^2-(x-1)(x+2)-2(x-1)(x+3)
⑤15x^8y^2z^4/(-3x^4yz^3)/(-4x^2y)
⑥(0.16mn^4-0.6m^2n^3+1.4mn^3)/(-2/5mn^3）

①(-2ab)^2*(-a)^2+(2ab)^2*(-a)3*b
=(2ab)^2*a^2-(2ab)^2*a^3*b
=(2ab)^2*a^2*(1-ab)
②(-4a^2b)^3*(ac^2)2-(2a^4c^2)*(-a^2b^2)*c
=-64a^6b^3*a^2c^4+2a^4c^2*a^2b^2*c
=2a^6b^2c^3-64a^8b^3c^4
=2a^6b^2c^3(1-32a^2bc)
③(-a^5)/(-a)^2+(-3a^2)(-2a)
=-a^5/a^2+3a^2*2a
=-a^3+6a^3
=5a^3
④6x^2-(x-1)(x+2)-2(x-1)(x+3)
=6x^2-(x^2+x-2)-2(x^2+2x-3)
=6x^2-x^2-x+2-2x^2-4x+6
=3x^2-5x+8
⑤15x^8y^2z^4/(-3x^4yz^3)/(-4x^2y)
=15/3/4*x^8/x^4/x^2*y^2/y/y*z^4/z^3
=5/4*x^2z
⑥(0.16mn^4-0.6m^2n^3+1.4mn^3)/(-2/5mn^3）
=0.2mn^3(8n-3m+7)*5/(2mn^3）
=(8n-3m+7)/2

分式计算 [(a^2+ab-ac)/(a^2-ab)]*{[(a-b)^2-c^2]/(ab+a^2+b^2)}/{[a 实数a,b,c满足a^2+ab+ac 计算：((a ^2+ab )/(-c ))^3/((a ^2-b ^2)/(-ac ))^4 求证：(2a-b-c/a^2-ab-ac+bc)+(2b-c-a/b^2-bc-ab+ac)+(2c-a-b/c^2-a 已知3/a=4/b=5/c,求分式(ab-bc-ac)/(a^2+b^2+c^2) 已知a-b=3,b+c=-5,求ac-bc+a^2-ab a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快先化简,再求值：a^2+ab-ac/a^2-ab·(a-b)^2-c^2/a^2+2ab+b^2÷a^2-(b-c)^2 若a,b,c互不相等,求2a-b-c/a²-ab-ac+bc +2b-c-a/b²-ab-bc+ac a+b/2ab 2AB/A+B 已知a,b,c满足 1,ab/a+b=4 2、bc/b+c=3/2 3、ac/a+c=6/5 ,则ab+bc+ac/ab