Solve for x in the equation x3 - 5x2 - x + 5 = ...
Solve for x in the equation x3 - 5x2 - x + 5 = 0
1, - 1, or 5
1, 1, or -5
-1, 1, or -5
1, 1, or 5
Correct answer is A
x3 - 5x2 - x + 5 = 0.
x2(x−5)−1(x−5)=0
(x2−1)(x−5)=0⟹(x−1)(x+1)(x−5)=0
∴
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