Question

Solve (P+2)(P-2) using (a+b) (a-b)=a2-b2

Answer 1

Answer:

$(p + 2)(p - 2) \\ w \: know \: that \: {a + b}{a -b} = a^{2}-b^{2} \\ therefore \: (p + 2)(p - 2) = p^{2} - (2)^{2} \\ = p^{2} - 4$