CBSE Class 9 Answered
Asked by kishor.kp14 | 30 Jul, 2019, 15:35: PM
![begin mathsize 16px style We space know space that comma
left parenthesis straight a space minus space straight b right parenthesis squared space equals space straight a to the power of 2 space end exponent space plus space straight b squared space minus space 2 ab
rightwards double arrow open parentheses straight x space minus space 1 over straight x close parentheses squared space equals space straight x squared space plus space 1 over straight x squared space minus space 2 space cross times space straight x space cross times space 1 over straight x space
space space space space space space space space space space space space space space space space space space space space equals space straight x squared space plus space 1 over straight x squared space minus space 2 space
space space space space space space space space space space space space space space space space space space space space equals space 5 space minus space 2 space space space space space space space space space space space space space space space space space space space space space open parentheses space straight x squared space plus space 1 over straight x squared space equals space 5 space... space given close parentheses
space space space space space space space space space space space space space space space space space space space space equals space 3
Taking space positive space square space root space on space both space the space sides comma space we space get
straight x space minus space 1 over straight x space equals space square root of 3
end style](https://images.topperlearning.com/topper/tinymce/cache/2d446cc27fa9b4e330a4128c1a748047.png)
Answered by Yasmeen Khan | 30 Jul, 2019, 15:49: PM
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