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Popular >

If a number is subtracted from five times its square, the result is four. Find all such numbers.

Solution

If a number is subtracted from five times its square, the result is four. Find all such numbers.

Solution

The number : 1 or - \frac{4}{5}

Solution steps

Represent the number with

x

A.T.Q.:

5 x^{2} - x = 4

Solve for

x, 5 x^{2} - x = 4 : x = 1, x = - \frac{4}{5}

The number : 1 or - \frac{4}{5}

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