" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
17. 8a^2 - 2b^2 = 2 ( 2a - b)( 2a + b)
18. 25p^2 - 16q^2 = ( 5p + 4q)( 5p -4q)
19. 36x^2 - 81y^2 = ( 6x - 9y)(6x + 9y)
20. 81p^2 - 100q^2 = ( 9p + 10q)(9p - 10q)