" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
maka:
a + b = 6
ab = 4
yg ditanya a² + b² = (a + b)² - 2ab
= 6² - 2(4)
= 36 - 8
= 28