Question

The area of the triangle formed by (a,b+c),(b,c+a) and (c,a+b) is

Answer 1

Explanation:

(a,b+c);(b,c+a);(c,a+b)

△=∣∣∣∣∣∣∣∣1ab+c1bc+a1ca+b∣∣∣∣∣∣∣∣

ab+b2−c2−ac−a2−ab+bc+c2+ac+c2−a2−bc

=0

Area of triangle=21∣△∣=0