<PRE><B>Question 1081278</B>
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Fifteen less than the square of a number is the same as twice the number. Find the number.
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Exact translation into equation, n being the unknown number:
{{{-15+n^2=2n}}}
Solve.
{{{n^2-2n-15=0}}}
{{{(n-5)(n+3)}}}
-
{{{system(n=-3,or,n=5)}}}



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Find three consecutive positive integers such that the square of the first increased by the last is 22.
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Give variable, translate the description, solve equation...

RESULT:   4, 5, 6.</PRE>