" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
(4a-2b)²=16a²-16ab+4b²
(2x+4)^3=8x^3+48x²+48x+64
(3a-b)^3=27a^3-27a²b+9ab²-b^3