kwadrat liczby x=3-2pierwiastek5
x = 3-2√5
x² = (3-2√5)² = 3²-2·3·2√5+(2√5)² = 9-12√5+20 = 29-12√5
Korzystamy ze wzoru skróconego mnożenia:
(a-b)² = a²-2ab+b²
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x = 3-2√5
x² = (3-2√5)² = 3²-2·3·2√5+(2√5)² = 9-12√5+20 = 29-12√5
Korzystamy ze wzoru skróconego mnożenia:
(a-b)² = a²-2ab+b²