Question:
How to get the zeroes of cubic polynomial
Answer:
Let the cubic polynomial is
Ax3 + Bx2 + Cx + D
Let the zeroes of this polynomial are a, b, c.
Now
a+b+c = -B/A ............1
a*b*c = -D/A ............2
ab + bc + cd = C/A .....3
Now by using these three equation, we can find the value of a, b, c.
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