The sum of the squares of two numbers is 13 and their product is 6. Find :
(i) the sum of the two numbers.
(ii) the difference between them.

Answered By

(x + y)(x - y)(x² + y²)(x⁴ + y⁴) is equal to:
x⁴ + y⁴
x⁸ + y⁸
x⁸ - y⁸
2x⁶y⁶