Question 400138
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Hi
solving using the quadratic formula
 3x^2-30x-180=0
3(x^2 -10x-60) = 0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{x = (10 +- sqrt( 340 ))/(2) }}}
{{{x = (10 +- sqrt( 4*85 ))/(2) }}}
{{{x = 5 +- 1*sqrt( 85 ) }}}
x = {14.2195, -4.2195}