Find the distance between the point R(a+b\'a-b)and (a-b\'a+b)

1.	Find the distance between the point R(a+b\'a-b)and (a-b\'a+b)
Answer» d2= ((a+b)-(a-b))2 +((a-b)-(a+b))2=(a+b-a+b)2 + (a-b-a-b)2=4b2 + 4a2so d= ((4(a2+b2))1/2=2 root(a2+b2)\xa0

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