+0  
 
0
281
1
avatar

There are two pairs (x,y) of real numbers that satisfy the equation x + y = 3, xy = 1. Given that the solutions x are in the form x = (a pm b*sqrt(c))/d where a, b, c, and d are positive integers and the expression is completely simplified, what is the value of a + b + c+ d ?

 Feb 15, 2022
 #1
avatar+65 
-1

By the quadratic formula, the solutions are x = (5 \pm 2*sqrt(5))/2, so a + b + c + d = 12.

 Feb 15, 2022

2 Online Users

avatar