Solve x^-2-1/x^2

$$x ^ { - 2 } - \frac { 1 } { x ^ { 2 } }$$

Evaluate

$$0$$

Short Solution Steps

To add or subtract expressions, expand them to make their denominators the same. Multiply x^{-2} times \frac{x^{2}}{x^{2}}.

$$\frac{x^{-2}x^{2}}{x^{2}}-\frac{1}{x^{2}}$$

Since \frac{x^{-2}x^{2}}{x^{2}} and \frac{1}{x^{2}} have the same denominator, subtract them by subtracting their numerators.

$$\frac{x^{-2}x^{2}-1}{x^{2}}$$

Do the multiplications in x^{-2}x^{2}-1.

$$\frac{1-1}{x^{2}}$$

Do the calculations in 1-1.

$$\frac{0}{x^{2}}$$

Zero divided by any non-zero term gives zero.

$$0$$

Factor

$$0$$