Question

if E is a point on side CA of an equilateral
triangle ABC such that BE 1 AC, then
(AB) +(BC)? +(CA)? = K(BE)?. Find k.​

Answer 1

Answer:

Problem 1 Two of the following systems of equations have solution (1;3). Find them out by checking.

a) \displaystyle \begin{array}{|l} x + y = 5 \\ 2x - y = 7; \end{array}

x+y=5

2x−y=7;