3.
已知极坐标系的极点与直角坐标系的原点重合,极轴与\(x\)轴的非负半轴重合。曲线\({C}_{1}:\begin{cases}x=1+ \sqrt{2}t \\ y=- \sqrt{2}t\end{cases} (t\)为参数\()\),曲线\(C_{2}\)的极坐标方程为\(ρ=ρ\cos 2θ+8\cos θ\).
\((\)Ⅰ\()\)将曲线\(C_{1}\),\(C2\)分别化为普通方程、直角坐标方程,并说明表示什么曲线;
\((\)Ⅱ\()\)设\(F\)\((1,0)\),曲线\(C1\)与曲线\(C2\)相交于不同的两点\(A\),\(B\),求\(|AF|+|BF|\)的值.