Question: The lowest common denominator that can be used when adding 3 x - 1 x + 3 + 9 x + 1 x 2 -

The lowest common denominator that can be used when adding 3x-1x+3+9x+1x2-9 is N, where N is an expression in
x. What is the value of N if x=4?
The lowest common denominator that can be used when adding 3x-1x+3+9x+1x2-9

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