SOLUTION: If 6 is added to a number and then subtracted from the same number,the product of the sum and the difference is 189. what is the number?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: If 6 is added to a number and then subtracted from the same number,the product of the sum and the difference is 189. what is the number?      Log On


   

Question 306867: If 6 is added to a number and then subtracted from the same number,the product of the sum and the difference is 189. what is the number?
Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=the number
(x+6)(x-6)=189
x^2 - 36 = 189
x^2=225
x=15