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Populaire Word Problems >

The sum of a certain positive number and the square of that number is 12. What si the number?

Solution

T h e s u m o f a cer t ain p os i t i v e n u mb er an d t h e s q u a re o f t ha t n u mb er i s 12. Wha t s i t h e n u mb er ?

Solution

The number : 3

étapes des solutions

Represent the number with

x

A.T.Q.:

x + x^{2} = 12

Solutionner pour

x, x + x^{2} = 12 : x = 3, x = - 4

Select positive solutions:

3

The number : 3

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