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The other root is conjugate of it I. E 1/root4+root3 hope this helps u
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1
------- ×√4+√5
√4-√5. -------
√4+√5=
√4+√5
-------------------
(√4)(√4)-(√5)(√5)
√4+√5
-----------=
4-5
√4+√5
---------
-1
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