Question

factorise x2 + 1/x2 = 27​

Answer 1

Step-by-step explanation:

x²+1/x²=27

(x+1/x)² or (x+1/x)(x+1/x)

x²+1/x²+2(x)(1/x)

x²+1/x²+2

(x+1/x)²=27+2=29

Factorisation

(x+1/x)(x+1/x)=29