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02-12-2017
Mathematics

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A positive number is 30 less than its square. Find the number.

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smartguy0365 smartguy0365

02-12-2017

x = x^2 - 30

or

x^2 - x - 30 = 0
Factors to
(x-6)(x+5) = 0

x = +6 is the positive number

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