Question

浙江版教与学八年级数学上册34页14题怎么解?

Answer 1

PA2-(P1P)2+(P1C)2=AC2=16

PA2-(P1P)2+(P1P+PC)2=16

PA2-(P1P)2+(P1P)2+(PC)2+2*(P1P*PC)=16

PA2+(PC)2+2*(P1P*PC)=16

PA2+PC(PC+2*P1P)=16

PA2+PC*PB=16

第一问做出来了,第二问就好做啦