Question 539739
{{{a^-2-2a^-1+5=0}}}

{{{(1/a^2)-(2/a)+5=0}}}

LCD = a^2
Multiply equation by LCD

{{{1-2a+5a^2=0}}}

{{{5a^2-2a+1=0}}}

Find the roots of the equation by quadratic formula							
							
a=	5	,b=	-2	,c=	1		
					b^2-4ac=		
b^2-4ac=	4	-	-20				
b^2-4ac=	-16			
{{{sqrt(	-16	)}}}=	4i
{{{x=(-b+-sqrt(b^2-4ac))/(2a)}}}							
{{{x1=(-b+sqrt(b^2-4ac))/(2a)}}}							
x1= (-(-2)+4i)/10

x1=0.2+0.4i
x2=0.2-0.4i

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