When they are scalar, xy and yx are equivalent.
When they are vectors or matrices, they are not equivalent.
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xy = x ÷x y = 1
This gives us the equations: n = xy = yx x != y (Note that for this example, the != stands for not equal to similar to some programming languages.) xy always equals yx due to the communtative property of multiplication. So there are actually an infinite number of answers. Some are given below: 6 = (2)(3) = (3)(2), 2 != 3 12 = (3)(4) = (4)(3), 3 != 4
xy - xy = 0
If y = 0 then yx - 5 = 0*x - 5 = 0 - 5 = -5
The GCF is xy