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| 1. |
P( a+b ,a-b) and q( a-b,a+b ) |
| Answer» PQ = root (a-b-a-b)^2 + (a + b - a + b)^2root(-2b)^2 + (2b)^2root4b^2 + 4b^2root 8b^22root2 b | |