" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
-3^2 -4(-3) -21 = 0
9 + 12 - 21=0
21-21 = 0
2. x^2 -4 = 0
2^2 -4 = 0
4-4 =0