26. If (a² - 4a - 1) = 0 and a ≠ 0, find the values of :
(i) (a-1/a)
.
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2
Answer:
4
Step-by-step explanation:
given
a^2-4a-1=0
this gives
a^2-1=4a
or, (a^2-1)/a=4
on dividing, we get
a-1/a=4 (this is possible only when a is not 0 which is given, hence ans.)
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0
Answer:
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