" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(a² + 2ab + b² ) - (a² - 2ab + b²)
a² - a² + 2ab - 2ab + b² + b²
2b²
= (a + b) - (a+b) - (a - b) - (a - b)
= a² + ab + ab + b² - a² - ab - ab + b²
Atau = a² + 2ab + b² - a² - 2ab+ b² ← itu sama saja
= 2b²