" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Zał. (x+2) (x² +2x +1)≠0
(x+2)(x+1)² ≠0
x+2≠0 ∧ (x+1)²≠ 0
x≠ -2 ∧ x ≠ -1 D= R\ {-2, -1}
W liczniki wyłączam x+1
= {(x+1)(x² -4)}/ (x+2)(x+1)² = {(x+1)(x-2)(x+2)}/(x+2)(x+1)²
skracamy przez (x+2)(x+1)
= (x-2)/(x+1)