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| 1. |
if P (-5,7) Q (0,y) PQ = 13 find y |
| Answer» (pq)2=(-5-0)2 + (7-y)213x13=25+49+y2-14y169=y2-14y+74y2-14y-95=0y2-19y+5y-95=0y(y-19) + 5(y-19)=0y=19 or y=-5 | |