" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x²+y² bisa kita ubah menjadi (x+y)²-2xy
Sehingga
X²+y² = (x+y)² - 2xy
6 = 2² - 2xy
6 = 4 - 2xy
2 = - 2xy
xy = - 1
X³+y³ = (x+y)³ - 3xy(x+y)
=2³ -(-1)(2)
=8+2 = 10