Question 178224
what is the answer to this polynomial using real numbers and how did you come up with the answer. 
(n+3)^2 = 18
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n+3 = +sqrt(18), -sqrt(18)
n = -3-3sqrt(2)
n = -3+3sqrt(2)
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It's not "the answer to the polynomial", it's solve the equation for n.  The answers are real numbers, but you don't use real numbers to solve it.