" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
pembuktian :
f(-5) = 6 + 4(-5) -2(-5)²
= 6 - 20 - 2.25
= 6 - 20 - 50
= 6 - 70
= -64 (benar)