Saved Bookmarks
| 1. |
rationalize the denominator x=root5-2 by root5+2 y=root5+2 by root5-2 find x^2+y^2+xy |
| Answer» X=(√5-√2) ÷(√5+√2) =(√5-√2)^2 ÷( √5)^2 -(√2)^2 =(7-2√10)÷3Smlly y=(7+2√10)÷3X^2={(7-2√10)÷3}^2 =(89-28√10)÷9Smlly y^2=(89+28√10)÷9Xy={(7-2√10)÷3}×{(7+2√10)÷3} =1A\\Q =x^2+y^2+xyPutting the value =187÷9 | |