The triangle below is an isosceles triangle. Side AB= 2x + 3, BC= 4x + 4 and AC= 3x + 7. Find AB
AC = BC ....so....
3x + 7 = 4x +4
7- 4 = 4x - 3x
3 = x
AB = 2x + 3 = 2(3) + 3 = 9
