It is still infinity.
If you add an infinite number plus a finite number, you get the same infinite number.
If you multiply an infinite number times a finite number, you get the same infinite number.
If you raise an infinite number to a finite power, you get the same infinite number.
For example, aleph-zero squared is still aleph-zero.
If you raise two (or a higher finite number) to an infinite power, you get a larger infinite number. To say it another way, the infinite number must be in the exponent, to get a larger infinity. For example, two to the power aleph-zero is equal to aleph-one; two to the power aleph-one is equal to aleph-two, etc.
Read the Wikipedia article on "Aleph number" for more details. http://en.wikipedia.org/wiki/Aleph_number
Also note that "infinity" has different meanings in different contexts, even if you concentrate only on mathematical meanings (as opposed to philosophical meanings, for example). I therefore suggest you also read articles about "Infinity", for example, at http://en.wikipedia.org/wiki/Infinity
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4 squared means multiplied by itself so 2 squared is 2 times 2 which is 4 if i took 7 squared, that would be 7 times 7 which is 49
81 x 2 - 16 = 146
There are an infinity of numbers and each one has its square...
2 cm squared or 4 centimetres depending if its two times two centimetres or two times two in centimetres
An unknown number x times infinity would be infinity.