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Maths Puzzle
Number System
The sum of the squares of two consecutive integers is 41. Find the integers
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- Let x, (x+1) be the 2 integers
x^2 + (x+1)^2 = 41
x^2 + x^2 + 2x + 1 = 41
2x^2 + 2x - 40 = 0
x^2 + x - 20 = 0
(x+5) (x-4) = 0
x=-5 or x=4
If x=-5, x+1= -4
If x=4, x+1=5
So the 2 integers are (4,5) or (-5,-4)
- 10 years agoHelpfull: Yes(3) No(0)
- x^2+(x+1)^2=41
2x^2+2x-40=0
x^2+x-20=0
x=4 & x=-5
thus 4,5 & -5,-4 - 10 years agoHelpfull: Yes(0) No(0)
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