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Popular Word Problems >

The square of a number is equal to 72 more than the number. Find all such numbers.

Solution

T h e s q u a re o f a n u mb er i s e q u a l t o 72 m ore t han t h e n u mb er . F in d a ll s u c h n u mb ers .

Solution

The number : 9 or - 8

Solution steps

Represent the number with

x

A.T.Q.:

x^{2} = 72 + x

Solve for

x, x^{2} = 72 + x : x = 9, x = - 8

The number : 9 or - 8

Popular Examples

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