Cho a/b = c/d với a, b, c, d > 0. Chứng minh rằng\(\dfrac{7a^2+3ab}{11a^2-8b^2}=\dfrac{7c^2+3cd}{11c^2-8d^2}\)
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 a)5a+3b/5a-3b ; b)7a^2+3ab/11a^2-8b^2=7c^2+3cd/11c^2-8d^2
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
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 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
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 ,cminh rằng
(7a^2+3ab)/(11a^2-8b^2)=(7c^2+3cd)/(11c^2-8d^2)
CMR nếu a/b=c/d thì\(\frac{7a^2+3ab}{11a^2-8b^2}=\frac{7c^2+3cd}{11c^2-8d^2}\)