SOLUTION: One number is three less than twice another. The sum of their squares is 74. Find the numbers.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: One number is three less than twice another. The sum of their squares is 74. Find the numbers.      Log On


   



Question 364851: One number is three less than twice another. The sum of their squares is 74. Find the numbers.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
One number is three less than twice another. The sum of their squares is 74. Find the numbers.
-----------
1st: x
2nd: 2x-3
-----
Equation:
x^2 + (2x-3)^2 = 74
x^2 + 4x^2 -12x + 9 = 74
---
5x^2 -12x - 65 = 0
---
(x-5)(5x+13) = 0
1st: x = 5
2nd: 2x-3 = 7
===============
Cheers,
stan H.