Cho a/b = c/d với a, b, c, d > 0. Chứng minh rằng\(\dfrac{7a^2+3ab}{11a^2-8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)
Hẹp me
Cho \(\dfrac{a}{b}=\dfrac{c}{d}\) Chứng minh:
\(\dfrac{7a^2+3ab}{11a^2-8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)
\(Cho\)\(\dfrac{a}{b}\)
\(Chứng\) \(Minh\)
\(\dfrac{7a^2+3ab}{11a^2-8b}\)\(=\)\(\dfrac{7c^2+3cd}{11c^2-8d}\)
Cho tỉ lệ thức\(\dfrac{a}{b}\)=\(\dfrac{c}{d}\). Chứng minh rằng ta có tỉ lệ sau: \(\dfrac{7a^2+3ab}{11a^2-8b^2}\)=\(\dfrac{7c^2+3cd}{11c^2-8d^2}\)
\(\dfrac{7a^2+3ab}{11a^2-8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)
cho tỉ lệ thức \(\dfrac{a}{b}=\dfrac{c}{d}\)(b\(\ne\)0;d\(\ne\)0)
e)\(\dfrac{2014a-2015b}{2016a+2017b}=\dfrac{2014c-2015d}{2016c+2017d}\)
f)\(\dfrac{7a^2+3ab}{11a^2-8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)
cho a/b = c/d chứng minh rằng 7a2+3ab /11a2- 8b2=7c2+3cd / 11c2-8d2
cho a/b= c/d thì
chứng minh\(\frac{7a^2-3ab}{11a^2-8b^2}=\frac{7c^2+3cd}{11c^2-8d^2}\)
cho a/b=c/d ,cminh rằng
(7a^2+3ab)/(11a^2-8b^2)=(7c^2+3cd)/(11c^2-8d^2)