What is the answer to x= 2/x ?

The answer to x= 2/x is x=sqrt(2),x=-sqrt(2)

The solution is x=sqrt(2),x=-sqrt(2)

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x= 2/x

x = \frac{2}{x}

x = 2, x = - 2

Decimal Notation

x = 1.41421 \dots, x = - 1.41421 \dots

Solution steps

x = \frac{2}{x}

Multiply both sides by

x

x^{2} = 2

Solve

x^{2} = 2 : x = 2, x = - 2

x = 2, x = - 2

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 2, x = - 2

f (x) = 420 - x x

f (x) = 3 x^{2} - 10 x - 25

S (x, y) = 3 x - 2 y + (3 x - 5 y) - 2 x + [3 y - (2 x - 7 y) + 4 x]

f (x) = 5 - 5 x + x^{2}

P (x, y) = m^{2} x m + 3 y m + 7 - m^{3} x m + 7 y m + 4 + m x m + 8 y m + 6