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Popolare Word Problems >

The square of 9 less than a number is 3 less than the number. What is the number?-12 or 7-12 or-7-7 or 12 7 or 12

Soluzione

T h e s q u a re o f 9 l ess t han a n u mb er i s 3 l ess t han t h e n u mb er . Wha t i s t h e n u mb er ? - 12 or 7 - 12 or - 7 - 7 or 127 or 12

Soluzione

The number : 12 or 7

Fasi della soluzione

Represent the number with

x

A.T.Q.:

(x - 9)^{2} = x - 3

Risolvi per

x, (x - 9)^{2} = x - 3 : x = 12, x = 7

The number : 12 or 7

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