Question

Stiind ca $\frac{a}{b}$ = $\frac{2}{5}$ si $\frac{b}{c}$ = $\frac{3}{4}$ , sa se calculeze E=$\frac{ a^{2} }{bc}$ + $\frac{ b^{2} }{ac}$ + $\frac{ c^{2} }{ab}$
Dau coroana!Va rog ajutati-ma!

Answer 1

E = (a/b)*(a/c) + (b/a)*(b/c) + (c/a)*(c/b)
E = (2/5)*(3/10) + (5/2)*(3/4) + (10/3)*(4/3)
E = 3/25 + 15/8 + 40/9
E = 11591 / 1800