Question

Can any help me with partial fraction decomposition? It looks like a big problem and want to know if I'm on the right track

Answer 1

\[\left( a+b \right)^3=a^3+b^3+3ab(a+b)=a^3+b^3+3a^2b+3ab^2\]

Answer 2

Could you explain @surjihayer

Answer 3

\[\left( x^2+1 \right)^3=\left( x^2 \right)^3+1^3+3*x^2*1\left( x^2+1 \right)=x^6+1+3 x^4+3 x^2\]