" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(x-25)(x+25)= x²-625
(x-9)(x-7)= x²-16x+63
(x-5)(x-8)= x²-13x+40
(x-1)³=x³-3x²+3x-1