如图,一副三角板(直角顶点重合)摆放在桌面上,若∠AOD=145°,则∠BOC=____ .
It was messy so we cleaned the table ________ ourselves.
在等式y=ax2+bx+c中,当x=﹣1时,y=0;当x=2时,y=3;当x=5时,y=60.求a、b、c的值.