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פּוֹפּוּלָרִי Word Problems >

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

פתרון

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

פתרון

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

צעדי פתרון

Represent the number with

x

A.T.Q.:

5 x^{2} - x = 4

5 x^{2} - x = 4, x

פתור בשביל:

x = 1, x = - \frac{4}{5}

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

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