If a= 1+7 then find the value of -6/a
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Answered by
8
First of all it is a question that come in My exam. it should be 1+√7. -6/a =1-√7
Rishabh01:
a=1+√7
-6/a= -6/1-√7
Rationalising it
thnk u
-6/1-√7* 1+√7/1+√7
-6-6√7/1-6
-6-6√7/6
Sorry -6
-6 gets cancelled
We get 1-√7
Answered by
3
-6*1-root7/1+root7*1-root7
=-6(1-root7)/-6
ans=1-root7
=-6(1-root7)/-6
ans=1-root7
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