PLEASE HELP!!

A system of equations and its solution are given below.

Which expression is equivalent to 5r6141 2r+st6

1. are the triangles similar and if so why? what is the value of x? show your work.

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)