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20-09-2018
Mathematics

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Ten times the number n decreased by 13 is equal to the square of the same number n increased by 3

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20-09-2018

[tex] 10n - 13 = {n}^{2} + 3[/tex]
[tex] {n}^{2} - 10n + 16 = 0 [/tex]
[tex](n - 2) (n - 8) = 0 [/tex]
n=2
check it:

10(2)-13=
[tex] {2}^{2} + 3[/tex]

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