Any help would be really apreciated with the question

the pressure , p, and volume, v, of a gas undegoing a polytropic process are related by the equation -

$\displaystyle p1V1^n = p2V2^n$

where n is the polytropic index

if p1V1/T1 = p2V2/T2

Determine an expression for p1 in terms of p2,t1,t2 and n.