Các câu hỏi tương tự
\(\frac{a}{2019}\)Cho 3 số a,b,c thỏa mãn a/2019 = b/2020 = c/2021. Tính giá trị biểu thức: M=4*(a-b)*(b-c)-(c-a)^2
1. So sánh
a) \(A=\dfrac{1}{2}+\dfrac{1}{2^2}+\dfrac{1}{2^3}+...+\dfrac{1}{2^{2020}}+\dfrac{1}{2^{2021}}\) và B= \(\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{13}{60}\)
b) \(C=\dfrac{2019}{2021}+\dfrac{2021}{2022}\) và \(D=\dfrac{2020+2022}{2019+2021}.\dfrac{3}{2}\)
Cho a, b, c thoả mãn:
a/2018 = b/2019 = c/2020
CMR 4(a - b)(b - c) = (a - c)2
Cho 3 số a , b , c thỏa mãn :
\(\frac{a}{2019}=\frac{a}{2020}=\frac{c}{2021}\)
Tính : M = 4( a - b ) . ( b - c ) - ( c - a )
cho biết : \(\frac{a}{2018}=\frac{b}{2019}=\frac{c}{2020}\) cmr (a-c)^2=4(a-b)*(b-c)
Cho a,b,c thỏa mãn $\frac{a}{2018}$ =$\frac{b}{2019}$ =$\frac{c}{2020}$
CMR:(a-c)^3=8 $(a-b)^{2}$ (b-c)
Cho a.b.c thỏa mãn \(\frac{a}{2019}=\frac{b}{2019}=\frac{c}{2020}.\)CMR
\(4\left(a-b\right)\left(b-c\right)=\left(a-c\right)^2\)
cho \(\frac{a+b}{2018}=\frac{b+c}{2019}=\frac{c+a}{2020}\)
CMR \(\left(b-c\right)^2=4\left(b-a\right)\left(a-c\right)\)
\(Cho\) \(\frac{a}{2018}=\frac{b}{2019}=\frac{c}{2020}\)CMR
\(4\left(a-b\right)\left(b-c\right)=\left(a-c\right)^2\)