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| 1. |
If x=√5+2, then find the value of x square +1/x square |
| Answer» TION:=2− 3 ⇒ x1 = 2− 3 1 =2+ 3 (X 2 + x 2 1 )=(x+ x1 ) 2 −2=(2− 3 +2+ 3 ) 2 −2=14(x 2 − x 2 1 )=(x− x1 )(x+ x1 )=(4×−2 3 )=−8 3 | |