Question 1044085
solve
-16t^2+26t+105=0
 using the formula
{{{t = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{t = (-26 +- sqrt( 26^2-4*(-16)*105 ))/(2*(-16)) }}}

gives
{{{x = (-26 +- 86 ))/(-32) }}}
t=3.5 or t=-1.875

time cant be negative or t=3.5 is correct answer


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