5 to the second power is read as 5 squared because it is 52 or 5 times 5 or 25. We call a square number for ex: 4 (2 times 2), 16 (4 times 4), et cetera. 8 is not a square number being that none of its factors are a number times itself.
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2y squared * y cubed= 2y^5 (2y to the fifth power)
7 to the power of 5 squared would be written (75)2 Working the brackets first, you would take 7 to the power of 5, which is 7x7x7x7x7, giving 16,807 16,807 is then squared, and 16,807x16,807 = 282,475,249 so that would be your answer.
This kind of question needs to be more specific. It can be read either as (3x5)2 or as 3 x 52. In the first case we have 152 which equals 225. In the second case we have 3 x 25 = 75.
Negative 5 to the second power would be -5 times -5 which would be 25.
To get 25, you can multiply 5 by 5 because 5 multiplied by 5 equals 25. In mathematical terms, this can be expressed as 5 x 5 = 25. So, the numbers you multiply to get 25 are 5 and 5.