" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a + 2b = 11
a² - b² = 16
(a + b)(a - b) = 16
(a + b)(a - b) = 8 × 2
a + b = 8
a - b = 2
-------------
2a = 10
a = 5
b = 3
o
(a + b)(a - b) = 16 × 1
a + b = 16
a - b = 1
--------------
2a = 17
a = 17/2
b = 15/2
Reemplazar:
a + 2b = 11
5 + 2(3) = 11, si
17/2 + 2(15/2) = 47/2, no
a = 5
b = 3