" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
X.X = X²
X.7=7X
-7.X=-7X
-7.7=-49
X²+7x-7X-49=0
X²-49=0
x^2 + 7x -7x -49=
x^2 - 49