The sum of two numbers is 20 and the sum of their squares is 272. Find the numbers. plz help...dom
L lil_Dk New member Joined Mar 26, 2006 Messages 5 Mar 26, 2006 #1 The sum of two numbers is 20 and the sum of their squares is 272. Find the numbers. plz help...dom
S streetglow50 New member Joined Feb 27, 2006 Messages 10 Mar 26, 2006 #2 Well your two equations are: X + Y = 20 X(squared) + Y(squared) = 272
skeeter Elite Member Joined Dec 15, 2005 Messages 3,216 Mar 26, 2006 #3 x + y = 20 x<sup>2</sup> + y<sup>2</sup> = 272 from the first equation, y = 20 - x. substitute (20 - x) for y in the second equation and solve for x.
x + y = 20 x<sup>2</sup> + y<sup>2</sup> = 272 from the first equation, y = 20 - x. substitute (20 - x) for y in the second equation and solve for x.
