Các câu hỏi tương tự
cho 3 so thuc abc khac 0 va mot doi so khac nhau thoa man
a2 . ( b+ c ) = b2 . ( a + c ) = 2018
Tinh gia tri bieu thuc H = c2 . ( a+b)
cho 3 so a,b,c khac thuoc Q khac nhau tung doi mot va khac 0 thoa man a/b+c=b/a+c=c/a+b
Chung minh b+c/a+a+c/b+a+b/c khong phu thuoc vao cac gia tri cua a,b,c
Cho a,b,c khac 0 thoa man: \(\frac{2a+b+c}{a}\)=\(\frac{2b+c+a}{b}\)=\(\frac{2c+a+b}{c}\)
Tinh gia tri cua bieu thuc: P=\(\frac{\left(a+b\right)\left(b+c\right)\left(c+a\right)}{abc}\)
GIUP MINH VOI NHA!
Cho 3 so a,b,c khac 0 va doi mot khac nhau thoa man a^2.(b+c)=b^2.(a+c)=2015 Tinh c^2.(a+b)
cho a,b,c khac 0 thoa man\(\frac{a+b+c}{c}=\frac{a-b+c}{b}=\frac{-a+b+c}{a}\)
tinh m=\(\frac{\left(a+b\right)\cdot\left(b+c\right)\cdot\left(c+a\right)}{a\cdot b\cdot c}\)
Cho 3 so a,b,c khac 0 thoa man ab/a+b=bc/b+c=ca/c+a
Tinh gia tri cua bieu thuc M=ab+bc+ca/a^2+b^2+c^2
Cho a,b,c là cac so thoa man dieu kien \(\frac{2a-b}{a+b}=\frac{b-c+a}{2a-b}=\frac{2}{3}\)
Khi đo gia tri cua bieu thuc \(P=\frac{\left(5b+4a\right)^5}{\left(5b+4c\right)^2.\left(a+3c\right)^3}\)
cho 3 so a,b,c khac 0 va thoa man a+b-c/c=a+c-b/b=b+c-a/a
tinh gia tri bieu thuc P=(a+b)(b+c)(c+a)=abc
cho a,b,c la 3 so thuc doi mot khac nhau va khac khong, thoa man: a+1/b=b+1/c=c+1/a. hay chung minh rang abc=1 hoac abc=-1