Answer
46
Work Step by Step
$6+5(x-6)^{3}$ for $x=8$
substitute 8 for each x
$6+5(8-6)^{3}$
complete grouped operations first
$6+5(2)^{3}$
exponents come next
$6+5(8)$
multiplication and division in order left to right
$6+40$
addition and subtraction left to right
$46$
