Question 321332: I need help with the following word problem:
The sum of a positive number and its square is 210. find the number.
thank you! Found 2 solutions by mananth, MathTherapy:Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! let the number be x
square of the number will be x^2
..
x^2+x=210
x^2+x-210=0
x^2+16x-15x-210=0
x(x+16)-15(x+16)=0
(x+16)(x-15)=0
x= -16 OR 15
x=15
You can put this solution on YOUR website! I need help with the following word problem:
The sum of a positive number and its square is 210. find the number.
thank you!
Let number be N
Then we'll have:
(N + 15)(N - 14) = 0 ------ Factoring equation
N + 15 = 0, or N - 14 = 0
N = - 15 or N = 14.
Since it's stated that the number is positive, then we'll have N, or number =
Send comments and “thank-yous” to MathMadEzy@aol.com
