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Question

Solve the following equation:
x3+63x316=0.

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Solution

Given equation, x3+63x316=0

x3+4x24x2+79x16x316=0(x4)(x2+4x+79)=0

Solving the quadratic equation, we have x=2±53i

Roots of the given equation are x=4,2±53i


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