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# Quick (and simple :P) maths question...... watch

1. Is written as or .........or neither ?
2. It's

If you were stuck in an exam what would you do? Well, just let x = 3 for example.

Then you know that -0.5x^-2 = -0.5 * (3^-2) = -0.5 * (1/9) = -1/2 * 1/9 = -1/18

Where as -2/x^2 = -2/9 which is clearly not -1/18, so it can't be that -0.5x^-2 = -2/x^2.
3. (Original post by Introverted moron)
Is written as or .........or neither ?

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