SOLUTION: Find two consecutive positive integers such that the sum of their square is 85. Your help will be very appreciated! Thanks so much! ac

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Question 59202: Find two consecutive positive integers such that the sum of their square is 85.
Your help will be very appreciated!
Thanks so much!
ac

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Let the consecutive integers equal x and x+1


This can be solved either by the quadratic formula
of by completing the square. I'll complete the square
subtract 1 from both sides

divide both sides by 2

to complete the square, take one-half of the coeffecient
of x, square it, and add it to both sides
Half of 1 is 1/2 and (1/2)^2 = 1/4






and



The problem wants 2 consecutive POSITIVE integers, so I'll
pick x = +6

The answers are +6 and +7
check:



OK

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