Question

if (a-1/a)=2, find the value of (a² + ¹/a²)​

Answer 1

Answer:

Given:

(a-1/a)=2

Squaring both sides, we get

(a-1/a)²=2²

a²+1/a²-2*a*1/a=4           [(x-y)²=x²+y²-2xy]    

a²+1/a²-2=4

a²+1/a²=6

HOPE IT HELPS YOU:)