SOLUTION: Problem solving Questions (consecutive type problems) Fifteen less than the square of a number is the same as twice the number. Find the number. Find three consecutive positi

Algebra ->  Equations -> SOLUTION: Problem solving Questions (consecutive type problems) Fifteen less than the square of a number is the same as twice the number. Find the number. Find three consecutive positi      Log On


   

Question 1081278: Problem solving Questions (consecutive type problems)
Fifteen less than the square of a number is the same as twice the number. Find the number.
Find three consecutive positive integers such that the square of the first increased by the last is 22.

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
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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%2Bn%5E2=2n
Solve.
n%5E2-2n-15=0
%28n-5%29%28n%2B3%29
-
system%28n=-3%2Cor%2Cn=5%29


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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.