(a) If a + ¹ = 3, find : a² + 1/2
Answers
Answered by
0
a+1/a = 3 -----(1)
a²+1/a² = ?
By doing square of equation 1
(a+1/a)² = 9
a² + 1/a² + 2 × a × 1/a = 9
a² + 1/a² + 2 = 9
a² + 1/a² = 9-2
a² + 1/a² = 7 Ans.
Similar questions