Net work 2

A $2.0 \text{ kg}$ particle with initial velocity $5 \hat{x} - 4\hat{y} \text{ m/s}$ now has a velocity of $7\hat{x} + 3\hat{y} \text{ m/s.}$ Assuming that no energy was lost in the process, how much work was done by the resultant force during the time interval?

$\hat{ x } \text{ and } \hat{ y}$ are unit vectors along x and y directions in a $2$ -dimensional plane.