" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1. y² - 25
2. 81 - a²
3. 1 - a
JAWAB
1. y² - 25 = y² - 5² = (y + 5)(y - 5)
2. 81 - a² = 9² - a² = (9 - a)(9 + a)
3. 1 - a = (1 - a)(1 + a)(1 + a)-¹
2) 81- a^2=(9-a)(9+a)
3) 1-a^2=(1-a)(1+a)