Question 900399
 <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi
5x^2 + 10x – 5 = 0  Format a^2 + bx + c
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{x = (-10 +- sqrt( 100+100 ))/(10) }}}
{{{x = (-10 +- sqrt( 200 ))/(10) }}}
{{{x = (-10 +- sqrt( 100*2))/(10) }}}
{{{x = (-10 +- 10sqrt( 2))/(10) }}}
{{{x = -1 +- sqrt( 2)}}}
d.x=-1-&#8730;2,x=1+&#8730;2