Asked by kate
use the quadratic formula to solve for x.
x^2+2x+5-0
x^2+2x+5-0
Answers
Answered by
MathMate
x^2+2x+5=0
This equation has two complex roots. If you have not done complex roots before, I suggest you check that the equation has been correctly posted.
You can apply the quadratic formula directly,
a=1, b=2, c=5,
x=(-b±√(b²-4ac))/2a
=(-2±√(2²-4*1*5))/(2*1)
=-1±2i
This equation has two complex roots. If you have not done complex roots before, I suggest you check that the equation has been correctly posted.
You can apply the quadratic formula directly,
a=1, b=2, c=5,
x=(-b±√(b²-4ac))/2a
=(-2±√(2²-4*1*5))/(2*1)
=-1±2i
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