原式=（-x）2+2x•14+（14）2=x2+12x+116．
已知直角三角形的三边长为6，8，x，则以x为边长的正方形的面积为______．
The young actress looked so charming in her beautiful dress that we took pictures with her.
A．a great many of
B．a good many
C．the number of
D．a large amount of
