" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2.(p-q)(p-q)=p^2- 2pq +q^2
= m² +2mn +n²
2.(p-q)³ = (p)³ - 3(p)²(-q) + 3(p)(-q)²-(-q)³
= p³ - 3p²-q + 3p-q²- (-q³)