" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
dla y = 0,6
(2x - 5y)² - 3(2x + 5y)² + (9y +2x)(9y - 2x)=
=(-1-3)²-3(-1+3)+(5,4-1)(5,4+1)=
=-4²-3*2+4,4*6,4=
=16-6+28,16=32,16