Question 216314
2x squared=-10x-5
2x^2+10x+5=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
x=(-10+-sqrt[10^2-4*2*5])/2*2
x=(-10+-sqrt[100-40])/4
x=(-10+-sqrt60)/4
x=(-10+-7.746)/4
x=(-10+7.746)/4
x=-2.254/4
x=-.5635 ans.
x=(-10-7.746)/4
x=-17.746/4
x=-4.4365 ans.