∴(x﹣3)(﹣x﹣3)=0,
则x﹣3=0或﹣x﹣3=0,
解得:x=3或x=﹣3,
即x1=3,x2=﹣3
We are looking forward the holiday.
如图,在菱形ABCD中,∠A=100°,E,F分别是边AB和BC的中点,EP⊥CD于点P,则∠FPC的度数为( )