Vamos là.
A)
(x² + 4x + 4) = (x + 2)²
x² - 4 = (x + 2)*(x - 2)
(x² + 4x + 4)/(x² - 4) = (x + 2)²/(x + 2)*(x - 2) = (x + 2)/(x - 2)
B)
(x² - 10x + 25) = (x - 5)²
x² - 25 = (x + 5)*(x - 5)
(x² - 10x + 25)/(x² - 25) = (x - 5)²/(x + 5)*(x - 5) = (x - 5)/(x + 5)
C)
x² - 36 = (x + 6)*(x - 6)
(x² - 36)/((x - 6)*(x + 6)) = (x - 6)*(x + 6)/((x - 6)*(x + 6)) = 1
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Vamos là.
A)
(x² + 4x + 4) = (x + 2)²
x² - 4 = (x + 2)*(x - 2)
(x² + 4x + 4)/(x² - 4) = (x + 2)²/(x + 2)*(x - 2) = (x + 2)/(x - 2)
B)
(x² - 10x + 25) = (x - 5)²
x² - 25 = (x + 5)*(x - 5)
(x² - 10x + 25)/(x² - 25) = (x - 5)²/(x + 5)*(x - 5) = (x - 5)/(x + 5)
C)
x² - 36 = (x + 6)*(x - 6)
(x² - 36)/((x - 6)*(x + 6)) = (x - 6)*(x + 6)/((x - 6)*(x + 6)) = 1