" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
a + 2b(a-b) - (a+2b)*(a-2b) + 3ab = a + 2ab - 2b² - (a² - (2b)²) +3ab
= a + 2ab - 2b² - a² + 4b² + 3ab = -a² + 2b² + 5ab +a.