What is the answer to 1-1/(x^2)=0.8 ?

The answer to 1-1/(x^2)=0.8 is x=sqrt(5),x=-sqrt(5)

Solve for x: 1-1/(x^2)=0.8

The solution is x=sqrt(5),x=-sqrt(5)

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1 - \frac{1}{x ^{2}} = 0.8

x = 5, x = - 5

Decimal Notation

x = 2.23606 \dots, x = - 2.23606 \dots

Solution steps

1 - \frac{1}{x ^{2}} = 0.8

Move

1

to the right side

- \frac{1}{x ^{2}} = - 0.2

Multiply both sides by

x^{2}

- 1 = - 0.2 x^{2}

Solve

- 1 = - 0.2 x^{2} : x = 5, x = - 5

x = 5, x = - 5

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 5, x = - 5

\frac{- 12}{x} = - 4

\frac{x}{- 27} = \frac{3}{- x}

80 = \frac{100 x + 70}{40 + x} 0.4

- \frac{x}{( 0.01 x ^{2} + 1 ) ^{2}} = 0

y, \frac{x}{x + y} - 2 y = 0

What is the answer to 1-1/(x^2)=0.8 ?
The answer to 1-1/(x^2)=0.8 is x=sqrt(5),x=-sqrt(5)
Solve for x: 1-1/(x^2)=0.8
The solution is x=sqrt(5),x=-sqrt(5)