If f(x)=x^2-9/x+3 is continuous at x=-3, find f(-3).
A. 3
B. -3
C. -6
D. 6
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Answer:
x = 3
Step-by-step explanation:
x^2 - 9 = (x+3)(x-3)
[(x + 3)*(x -3] /x+3) = x-3
x - 3 = 0
x = 3