Question

p^2 +20-(q+1)(q-1)Factorise ​

Answer 1

Answer:

• p^2-q^2+19 is the answer

Step-by-step explanation:

p^2+20-(q+1)(q-1)

(a+b)(a-b)=a^2-b^2

p^2+20-q^2-1^2

p^2+20-q^2-1

(arranging in order )

p^2-q^2+20-1

p^2-q^2+19

PLEASE MARK ME AS THE BRAINLIEST .....

regards from your ..helpmate.....