" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a² - b² = (a + b)(a - b)
a) a² - 4b² = (a + 2b)(a - 2b)
b) 9² - 81h² = (9 + 9h)(9 - 9h)
c) 16c² - 9d² = (4c - 3d)(4c + 3d)