Find all pairs of real numbers such that x + y = 10 and x^2 + y^2 = 56 + 2xy. For example, to enter the solutions and , you would enter "(2,4),(-3,9)" (without the quotation marks).
Here's Geno's answer : https://web2.0calc.com/questions/find-all-pairs-x-y-10-of-real-numbers-such-that-x
The solutions are
( 5 + sqrt 3 , 5-sqrt 3) and (5 -sqrt 3 , 5 + sqrt 3)
