Question 77762
Solve equation
x^2+2x+5=0
Use the quadratic formula to get:
x=[-2+-sqrt(4-4*5)]/2
x=[-2+-4i]/2
x= -1+2i ; or x = -1-2i
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value of k that completes the square
x^2+10x+k
x^2+10x+(10/2)^2
=x^2+10x+25
k=25
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Cheers,
Stan H.