What is the answer to x^{-1/2}= 2/5 ?

The answer to x^{-1/2}= 2/5 is x= 25/4

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x^{-1/2}= 2/5

x^{- \frac{1}{2}} = \frac{2}{5}

x = \frac{25}{4}

Decimal Notation

x = 6.25

Solution steps

x^{- \frac{1}{2}} = \frac{2}{5}

Take both sides of the equation to the power of

- 2 : x = \frac{25}{4}

x = \frac{25}{4}

Verify Solutions:

x = \frac{25}{4}

True

The solution is

x = \frac{25}{4}

3 x + 4 - x + 1 = 1

9 x^{\frac{2}{3}} = 4

(x - 2)^{\frac{3}{2}} = 8

x + 9 = 5

x + 3 = 7