Question

E is a point on side ca of a equilateral triangle abc such that be ca, then ab2 + bc2 + ca2 is

Answer 1

Step-by-step explanation:

2ab+2bc+2ca=0

2(ab+bc+ca)=0

2(ab+ab+ab)=0

2(3ab)=0

6ab=0

ab=-6

ab=bc=ca=-6