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| 1. |
If (225) = (165) find value of Y |
| Answer» (225)y => 2Y2 + 2Y + 5 = (165)8 => (117)10 ∴ 2Y2 + 2Y + 5 = 117 Y2 + Y - 56 = 0 ∴ Y = 7 or Y = - 8 ∴ Y should be 7. | |