Question

a+1/a =√5 find a2+1/a2

Answer 1

Answer:

In mathematics, a set A is a subset of a set B, or equivalently B is a superset of A, if A is contained in B. That is, all elements of A are also elements of B (note that A and B may be equal).

Answer 2

Answer:

=>a² +1/a² = 3

Step-by-step explanation:

➡Given here

✏ a + 1/a = √5........(1)

➡Find here

✏a² + 1/a² = ?

[ we know that ]

(x+y)² = x² + y² +2xy

So,

↪(a + 1/a )² = a² +1/a² +2

[ keep value by (1) ]

↪(√5)² = a²+1/a² +2

↪5 = a² + 1/a² +2

↪ a² +1/a² = 5-2

↪a²+1/a² = 3

➡Thats answer .