Question 1064054
{{{5-2x^2=-15}}}
{{{5-5-2x^2=-15-5}}}
{{{-2x^2=-20}}}
{{{-2x^2(-1/2)=-20(-1/2)}}}
{{{x^2=10}}}
{{{(x^2)^(1/2)=10^(1/2)}}}


{{{system(x=-sqrt(10),or,x=sqrt(10))}}}