For what value of x is the expression
x - 5/x2 - 2x - 3
not defined?
x - 5/x2 - 2x - 3
not defined?
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Correct Answer: Option C
Explanation:
x2 - 2x - 3 = 0
x2 - 3x + x - 3 = 0
x(x - 3) + (x - 3) = 0
(x + 1)(x - 3) = 0
x = -1 or 3
x2 - 2x - 3 = 0
x2 - 3x + x - 3 = 0
x(x - 3) + (x - 3) = 0
(x + 1)(x - 3) = 0
x = -1 or 3