Question

Assertion: if x^2+1/x^2=62 then x+1/x=8
reason: {a+b}^2=a^2+2ab+b^2

Answer 1

Answer:

x²+1/x²=62

(x+1/x)²—2.x.1/x=62

(x+1/x)²=62+2

x+1/x=√64

x+1/x=8