400
20 x 20 = 4002
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Oh, what a happy little question! 20 squared is simply 400. Just imagine that number as a beautiful, peaceful meadow where numbers play and dance in the sunlight. Keep painting with numbers, my friend, and let your creativity flow!
20 squared is equal to 400. This is calculated by multiplying 20 by itself, which results in 20 x 20 = 400. In mathematical notation, this would be written as 20^2 = 400.
20 squared is 400 which is a rational number
5x2 - 20 = 0x2 - 4 = 0x2 = 4x = +2 and -2
the hypotonose of a triangle is the square root or one side squared plus the other side squared.
(x - 5)(x + 4)
If you mean: 3x squared -11x -20 = 0 Then: x = -5 or x = 4/3