Question

If p=a+1/a and q=a-1/a, wt is p*p-q*q?

Answer 1

Answer:

4/a

Step-by-step explanation:

given that ;

p = a+1/a ; q = (a=1)/a

p*p = (a+1)(a+1) / a² = (a²+2a+1)/a²

q*q = (a-1)(a-1) / a²   = (a²-2a+1)/a²

now add these equations

P*P + Q*Q = (a²+2a+1)/a² - (a²-2a+1)/a²

     (the denominators are same so we can add numerators)

                  = 4a/a²

                  = 4/a      

               Hope it helps you.

Please mark it as the brainliest answer.