SOLUTION: if a number is added to its square, the result is 56. find the number.

Question 279123: if a number is added to its square, the result is 56. find the number.
Found 3 solutions by mananth, jsmallt9, nabla:
Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
Let the number be x
the other number will be x^2
x+x^2=56
x^2+x-56=0
x*2+8x-7x-56=0
x(x+8)-7(x+8)=0
(x+8)(x-7)=0

x=-8 or 7
x=7 satisfies the condition
Answer by jsmallt9(3758)   (Show Source): You can put this solution on YOUR website!
A solution provided by another tutor finds that
x = -8 or x = 7
And for some reason he/she suggests that x = -8 does not fit the problem. Both numbers are correct, not just x = 7.
Answer by nabla(475)   (Show Source): You can put this solution on YOUR website!
The question asks for a single number i.e. an element of the solution set. Both -8 and 7 fit this criteria, so either in fact can be offered as an answer that follows from a proper understanding of the question.
RELATED QUESTIONS
if a number is added to its square, the result is 56. Find the... (answered by Jadedstars12)
if a number is added to its square, the result is 56. Find the... (answered by josmiceli)
if a number is added to its square, the result is 56. Find the... (answered by user_dude2008)
if a number is added to its square, the result is 56. Find teh... (answered by Earlsdon)
If a number is added to its square the result is 56. Find the number. Thank... (answered by fractalier)
If a number is added to its square the result is 56. Find the number. Thank you (answered by stanbon)
If a number is added to its square the result is 56. find the number. thank... (answered by fractalier)
Please can you help i dont get this math question thanks!!:) 1. If a number is added to... (answered by solver91311)
if a number is added to its square,the result is 42.find the... (answered by MathLover1)