Question 6035
If you can't figure out that this factors into:
(x+14)(x-6) then it is easy to use the quadratic equation:
Let a=1
Let b=8
Let c= -84
and use the quadratic equation:
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{x = (-8 +- sqrt( 8^2-4*1*-84 ))/(2*1) }}}
{{{x = (-8 +- sqrt( 64+336 ))/(2) }}}
{{{x = (-8 +- sqrt( 400 ))/(2) }}}
{{{x = (-8 +- 20/(2)) }}}
{{{x = -4 +- 10 }}}
x=-14, x=6