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Frances Frazier
Mathematics
14 February, 08:42
Find all the zeros of each equation
x^3-x^2+5x-5=0
+4
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Colin
14 February, 08:46
0
you would get the answer of 1, i√5,-i√5
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Uriel Church
14 February, 08:52
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x = 1 or x = i sqrt (5) or x = - i sqrt (5)
Step-by-step explanation:
Solve for x:
x^3 - x^2 + 5 x - 5 = 0
The left hand side factors into a product with two terms:
(x - 1) (x^2 + 5) = 0
Split into two equations:
x - 1 = 0 or x^2 + 5 = 0
Add 1 to both sides:
x = 1 or x^2 + 5 = 0
Subtract 5 from both sides:
x = 1 or x^2 = - 5
Take the square root of both sides:
Answer: x = 1 or x = i sqrt (5) or x = - i sqrt (5)
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