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Question

Solve following equation:
x2+x2+1=0

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Solution

The given equation is

x2+x2+1=0

2x2+x+2=0

The roots of the quadratic equation Ax2+Bx+C=0 are

x=B±B24AC2A

for the given equation, B24AC is

=(1)24(2)(2)

=18=7

So the roots are

x=1±722

x=1±7i22

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