Find the sum: (3x3 + 2x2 + x + 4) + (2x3 - x2 - 3x + 1)
2 answers:
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Now we look at the common denominator.
It is x(x + 2)(x - 2).
x cannot be zero, -2 or 2 because that would cause a zero in the denominator.
Since we get x = 8, and x = 8 does not have to be excluded from the domain, the answer is x = 8.
Answer: x = 8