Question 1088607

A 4 term power expansion of {{{(x+y)^(-2)}}} would be,
{{{(x+y)^(-2)=1/y^2-(2x)/y^3+(3x^2)/y^4-(4x^3)/y^5}}}
Substituting,
{{{(-4x+3)^(-2)=1/3^2-(2(-4x))/3^3+(3(-4x)^2)/3^4-(4(-4x)^3)/3^5}}}
{{{(-4x+3)^(-2)=1/9+(8x)/27+(16x^2)/27+(256x^3)/242}}}