Log in

View Full Version : Solving quadratic word problems


miranda92293
Feb 27, 2009, 05:39 AM
find two consecutive positive integers such that the square of the first decreased by 25 equals three times the second.

Perito
Feb 27, 2009, 05:43 AM
The first integer is "X".
The second integer is, therefore, "X+1" because the integers are consecutive.

The square of the first is X^2 (or X*X).

If you decrease something by 25, you simply subtract 25 from it.