Question 322129
v^2=12v-24
v^2-12v+24=0
{{{v = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
v=(12=-sqrt-12^2-4*1*24])/2*1
v=(12+-sqrt144-96])/2
v=(12+-sqrt48)/2
v=(12+-6.9282)/2
v=(12+6.9282)/2
v=18.9282/2
v=9.4641 ans.
v=(12-6.9282)/2
v=5.0718/2
v=2.536 ans.