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| 1. |
Solve for X and y x+y=a+byax-by =a sq-b sq |
| Answer» x + y = a - b ............. (i)and ax - by = a2 + b2 ............... (ii)Multiply (i) by b and subtract by (ii)x = aPut x = 1 in (i)x + y = a - ba + y = a - by = -b | |