Q7 with graph plotting Share with your friends Share 0 Roopam Pandey answered this Dear student, Let the side of the square be a then area, a2=40a=210 (neglecting negative value since, the length cant be negative)then now from pythagores theorem,BD2=DC2+BC2BD2=a2+a2BD2=2a2BD2=2×40=80Also by using distance formula,BD=p+22+2-p2BD2=p+22+2-p280=p2+4+4p+4+p2-4p80=2p2+872=2p2p2=36p=±6then points are (-2,-6) and(-6,2)(-2,6) and (6,2)Regards 0 View Full Answer