SOLUTION: The square of a number is equal to twenty more than the number. Find all such numbers.

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Question 373904: The square of a number is equal to twenty more than the number. Find all such numbers.
Found 2 solutions by Fombitz, solver91311:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
N%5E2=20%2BN
N%5E2-N-20=0
%28N-5%29%28N%2B4%29=0
Two solutions:
N-5=0
highlight%28N=5%29
.
.
.
N%2B4=0
highlight%28N=-4%29

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the number.



Standard form of the quadratic:



Factor and solve for

John

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