" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
= 20x^2 - 15xy + 15x^2 + 6xy
= 35x^2 - 9xy
=20x^2+15x^2-15xy-6xy
=35x^2-9xy....