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(xy - 7)(x^2y^2 + 7xy + 49)
5x(7xy + 6x + 8)
-7xy(x4y2 + 6x2y - 5)
It means "1" is the magic number, like if you were to have a math problem that looked like this:7xy-xy+3xIt means use the "magic one" to combine 7xy and 1xyIf that doesn't make sense you should probably state the question like this:What does the "Magic 1" mean in math?
The numerical factor of a term is called the "coefficient."In algebra, coefficients are those numbers that are listed o front of a variable such as 'a' or 'b.' For instance, the algebraic term 7xy has the value seven as its coefficient.Cheers!