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its the beard it makes me look like santa.
Multiply it by itself and then do that again.
It is t2 (t squared). Anytime you multiply a number or a variable by itself, then it is squared. If it's multiplied by itself 3 times, then it's cubed, or t3
To square a matrix, simply multiply the matrix by itself. It is just like squaring any other regular number in mathematics.
The product of n multiplied by itself is written as n^2, which is read as "n squared." This is because when you multiply a number by itself, you are essentially squaring that number. So, n times n is equal to n^2.