Question 1159696
1-2/m=8/m^2


{{{1-2/m=8/m^2}}}

{{{m^2(1-2/m)=8}}}

{{{m^2-2m=8}}}

{{{m(m-2)=8}}}

{{{highlight(m=4)}}}


check:
{{{1-2/4=8/16}}}
{{{1/2=1/2}}}
yes.



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{{{m^2-2m-8=0}}}
{{{(m-4)(m+2)=0}}}
{{{system(m=4,or,m=-2)}}}?
check for  -2,
{{{1-2/(-2)=8/(-2)^2}}}
{{{1+1=8/4}}}
{{{2=2}}}
yes this too.