Use the method of partial fractions to show that:
, may be written as:
, where $$\lvert x\rvert\neq1 $$.
The Attempt at a Solution
I obviously know how to do it but in the solution am I allowed to do, let x = 1, to cancel some of the terms to figure out the constants in the partial fractions? Or do I have to do simultaneous equations by comparing the coefficients?