Mary S. answered 11/05/22
College Math Faculty-perfect Quant score on GMAT (for business school)
p^2 – 1 – 4q^2 – 4q
= p^2 - (4q^2 + 4q + 1)
= p^2 - (2q+1)^2
From here, you may recognize that it is in a form of a^2 - b^2.
Can you continue to finish it on your own? Or let me know if you need further assistance. Good study!