SOLUTION: The sum of a number and its square is 30. Find the​ number(s).
Algebra.Com
Question 1078194: The sum of a number and its square is 30. Find the number(s).
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The sum of a number and its square is 30. Find the number(s).
-----
Let the number be "x"::
Equation:
x + x^2 = 30
x^2 + x - 30 = 0
---
Factor::
(x-6)(x+5) = 0
----
x = 6 or x = -5
------------------
Cheers,
Stan H.
--------
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
x^2 + x = 30
z^2 + x - 30 = 0
(x-5)*(x+6) = 0
x = -6, x = 5
RELATED QUESTIONS
The sum of a number and its square is 56. Find the... (answered by Alan3354)
The sum of a number and its square is 182. Find the... (answered by user_dude2008)
The sum of a number and its square is 42. Find the number(s).
The number(s) is/are ?.... (answered by jorel1380)
When the sum of 7 and twice a positive number is subtracted from the square of the (answered by ikleyn)
the sum of a number and 5 times its reciprocal is 6. find the... (answered by rahman)
The sum of a number and 8 times its reciprocal is 6. Find the... (answered by RAY100)
The sum of a number and 2 times its reciprocal is 3. Find the... (answered by reynard2007)
The sum of a number and its square is 12. Find the... (answered by stanbon)
The sum of a number and its square is 72. Find the... (answered by Fombitz)