Frequent Questions about our Solver

The problem

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I do not understand the 3^2-1xa

Answer provided by our tutors

I am assuming "1xa" is expressing "1 multiplied by a", using an 'x' for multiplication.  The symbol '*' is an algebraic notation allowed for multiplication but any reference to 'x' is specifically meaning 'the variable "x"'. 

"3^2-1xa" is best expressed as "3^(2-1)a" and the "2-1" points out that the '3' in the denominator has been cancelled out. 

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