Answer
33
Work Step by Step
To evaluate, substitute the given values then solve using the order of operations.
$((4\times3.1)-4.6+0.2)^2-31$ solve the expression in the inner parentheses
$=(12.4-4.6+0.2)^2-31$ solve the expression in parentheses
$=(8)^2-31$ simplify the power
$=33$