" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2) 2x+5-x+3 = 2x-x+5+3 = x+8
3) x²+4x-1-2x²-4x = x²-2x²+4x-4x-1 = -x²+0-1 = -x²-1