2.
\((1)\)计算:\(\left( 4\sqrt{6}{-}6\sqrt{2} \right)\div 2\sqrt{2}=\)__________.
\((2)\)如图,在\(□\)\(ABCD\)中,\(AB=4\),\(BC=7\),\(∠ABC\)的平分线\(BE\)交\(AD\)于点\(E\),则\(DE=\)____________\(.\)
\((3)\)已知直线\(y=(2-3m)x\)经过点\(A(x_{1},y_{1})\)、\(B(x_{2},y_{2})\),当\(x_{1} < x_{2}\)时,有\(y_{1} > y_{2}\),则\(m\)的取值范围是__________\(.\)
\((4)\)已知一个直角三角形的两边长分别为\(4\)和\(3\),则它的面积为_____________.
\((5)\)如图,四边形\(OABC\)为矩形,点\(A\),\(C\)分别在\(x\)轴和\(y\)轴上,连接\(AC\),点\(B\)的坐标为\((4,3)\),\(∠CAO\)的平分线与\(y\)轴相交于点\(D\),则点\(D\)的坐标为_________.
\((6)\)如图,\(□\)\(ABCD\)中,\(AB=2\),\(BC=4\),\(∠B=60^{\circ}\),点\(P\)是四边形上的一个动点,则当\(\triangle PBC\)为直角三角形时,\(BP\)的长为_____________.