cho a/b = c/d . cmr 7a mũ 2 + 3cd / 11a mũ 2 - 8b mũ 2 = 7c mũ 2 + 3cd / 11c mũ 2 - 8d mũ 2
CMR: nếu a/b=c/d thì 7a^2 + 3ad / 11a^2-8b^2 = 7c^2 + 3cd / 11c^2-8d^2
CMR nếu a/b=c/d thì\(\frac{7a^2+3ab}{11a^2-8b^2}=\frac{7c^2+3cd}{11c^2-8d^2}\)
cho \(\dfrac{a}{b}=\dfrac{c}{d}\) Chứng minh rằng
\(\dfrac{7a^2+3ab}{11a^2+8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)
Cho a/b = c/d với a, b, c, d > 0. Chứng minh rằng\(\dfrac{7a^2+3ab}{11a^2-8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)
Cho \(\frac{a}{b}=\frac{c}{d}.CMR:\frac{7a^2+3ab}{11a^2-8b^2}=\frac{7c^2+3cd}{11c^2-8d^2}\)
cho a/b=c/d ,cminh rằng
(7a^2+3ab)/(11a^2-8b^2)=(7c^2+3cd)/(11c^2-8d^2)
\(Cho\)\(\dfrac{a}{b}\)
\(Chứng\) \(Minh\)
\(\dfrac{7a^2+3ab}{11a^2-8b}\)\(=\)\(\dfrac{7c^2+3cd}{11c^2-8d}\)
Hẹp me
Cho \(\dfrac{a}{b}=\dfrac{c}{d}\) Chứng minh:
\(\dfrac{7a^2+3ab}{11a^2-8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)