(a stands for initial value, b stands for final value, x stands for growth rate, and n stands for growth times or years. Of course, if it is negative growth, it is "1-x".

For example, the purchase price of a garment is 100 yuan, and the price after two consecutive price increases is 144 yuan. Find the average growth rate x every time.

The equation is: 100 squared *( 1+x) = 144.