Các câu hỏi tương tự
a/b+c+d=b/a+c+d=c/b+a+d=d/c+b+a
P=2a+5b/3c+4d-2b+5c/3d+4a-2c+5d/3a+4b+2d+5a/3c+4b
cho a/b=c/d. CMR:
a,5a-3b/3a+2b=5c-3d/3c+2d
b,2a+7b/a-2b=2c+d/c-2d
c,ac/bd=(ac)mũ 2/(bd)mũ 2
d,2a mũ 2+3c mũ 2/3b mũ 2+3d mũ 2=5a mũ 2-2c mũ 2/2b mũ 2- 2d mũ 2
Cho a+b+c+d ≠ 0 thỏa mãn:
\(\dfrac{a}{b+c+d}=\dfrac{b}{a+c+d}=\dfrac{c}{b+a+d}=\dfrac{d}{c+b+a}\)
Tính P = \(\dfrac{2a+5b}{3c+4d}+\dfrac{2b+5c}{3d+4a}+\dfrac{2c+5d}{3a+4b}+\dfrac{2d+5a}{3c+4b}\)
Cho a+b+c+d ≠ 0 và \(\dfrac{a}{b+c+d}=\dfrac{b}{a+c+d}=\dfrac{c}{b+a+d}=\dfrac{d}{c+b+a}\)
Tính giá trị biểu thức:
P = \(\dfrac{2a+5b}{3c+4d}-\dfrac{2b+5c}{3d+4a}+\dfrac{2c+5d}{3a+4b}+\dfrac{2d+5a}{3c+4b}\)
Cho \(\frac{a}{b}=\frac{c}{d}\) CMR: \(\frac{4a-2b}{5a+2b}=\frac{4c-2d}{5c+2d}\)
5a-3b/3a+2b=5c-3d/3c+2d
5a-3b/3a+2b=5c-3d/3c+2d
Cho a/b=c/d.Chứng minh;
a)a-b/2a=c-d/2c
b)5a-3b/3a+2b=5c-3d/3c+2d
15 tháng 1 2024 lúc 20:58
B1. Cho a/c=c/b.
b, b^2 - a^2/ a^2 +c^2 = b-a/a
B2. cho a/b=c/d.
CMR: a, 4a-3b/a=4c-3d/c
b,(a-b)^2/(c-d)^2=3a^2+2b^2/3c^2+2d^2
Cho a , b ,c ,d thỏa mãn : \(\frac{a}{a+2b}=\frac{c}{c+2d}\). Tính \(\frac{a^2d^2-4b^2c^2}{abcd}\)
Cho a ,b ,c , d thỏa mãn : \(\frac{2a+3c}{2b+3d}=\frac{3a-4c}{3b-4d}\).. Tính \(\frac{4a^3d^3-b^3c^3}{4b^3c^3-a^3d^3}\)