Question

AABC is an isosceles triangle. AB is the longest side with

length 9x+3, BC = 4x+6 and CA = 3x+9. Find AB.

Answer 1

30

Explanation:

Since ABC is isosceles, BC = CA.

• 4x + 6 = 3x + 9
• x = 3

So, AB = 9(3)+3 = 30.