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Popular >

The square of a number added to three times the number is 28 . Find the number.

Solution

The square of a number added to three times the number is 28 . Find the number.

Solution

The number : \frac{7}{2} or - \frac{7}{2}

Solution steps

Represent the number with

x

A.T.Q.:

(x + 3 x)^{2} = 28

Solve for

x, (x + 3 x)^{2} = 28 : x = \frac{7}{2}, x = - \frac{7}{2}

The number : \frac{7}{2} or - \frac{7}{2}

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