ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````

来源:学生作业帮助网 编辑:作业帮 时间:2024/03/29 09:46:08
ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````

ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````
ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)
急`````````````````````````````````````呐``````````

ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐``````````
a+b>0
0>a+c
a+b>a+c
b>c
|b-c|=b-c
a-b+|b-c|/(ab-bc)=a-b+(b-c)/(ab-bc)
请仔细检查题目中是否掉了符号,化简到此已是最简

楼上的a-b+(b-c)÷(ab-bc)可以把变成
a-c 1
——— = —
b(a-c) b
前面的证明条件和楼上一样

ab<0且a+b>0,ac>0且a+c<0,化简a-b+|b-c|÷(ab-bc)急`````````````````````````````````````呐`````````` ab<0且a+b>0,ac>0且a+c<0,化简a-b+ㄧb-cㄧ÷ab-bc呃..好难懂哒题喔... 若c<0,且a≥b,则ac( )ab.(填不等号) 如果a+b>0,a<0,ab<0,那么 (A)a,b异号,且a>b (B)a,b同号,且a<b (如果a+b>0,a<0,ab<0,那么(A)a,b异号,且a>b(B)a,b同号,且a<b(C)a,b异号,且|a|>|b|(D)a,b异号,且|a|<|b| 已知:a<-b,且a/b>0,化简|a|-|b|+|a+b|+|ab| 已知a<-b,且b分之a>0,试化简|a|-|b|+|a+b|+|ab| 若ab<0,且a+b>0,那么A.a、b一正一负,且负数的绝对值较大B.a、b都是正数C.a、b一正一负,且正数的绝对值较大D.a、b都是负数 b|b|>|a|>0,且√(ab^2/c)=(b/c)√ac,比较a,b,c的大小 已知a、b、c满足c<b<a,且ac<0,那么下列选项中不一定成立的是A.ab>ac B.c(b-a)<0 C.cb2<ab2 D.ac(a-c)<0 若a,b,c>0且a²+2ab+2ac+4bc=12 则a+b+c的最小值为 若a,b,c>0,且a^2+2ab+2ac+4bc=12,求a+b+c的最小值 若a,b,c>0且a²+2ab+2ac+4bc=12,则a+b+c的最小值是_______. 若a,b,c>0且a²+2ab+2ac+4bc=12,则a+b+c的最小值是_______.请详细解答 已知a,b,c为有理数,且c≠0,若a>b,则必有 A.ac>bc B.ac<bc C.ac²>bc² D.ac²小于bc² 若a<b,且ab>0 ,则化简√(b/a+a/b-2) 用分析法证明:若a>b>c,且a+b+c=0,则[√(b^2-ac)]/a<√3急!谢谢~ 如果a+b>0,且ab<0,那么A.a>0,b>0B.a<0,b<0C.a、b异号D.a、b异号,且负数的绝对值较小 若关于x的不等式ax²+bx+c<0(a≠0)无解则A.a<0且b²-4ac<0 B.a<0且b²-4ac≤0 C.a>0且b²-4ac≤0 D.a>0且b²-4ac>0答案为C,ax²+bx+c<0说明y<0,代表什么?如何判断此题图像?老师讲