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Writing mathematical power (or exponents) Three squared is written 32 = 3*3 ie 3 times itself twice. In the expression we just wrote the number 2 is written as a superscript number, ie a small number 2 to the right and above of the number 3 - this is the most common way a power expression is written. Sometimes the symbol ^ is used as a way of writing powers, for example 3^2 meaning three squared. This is used where using superscript is too difficult, for example in computer code comments where...