If a²-7a - 1 = 0 and a #0, find (i) a -1/a (ii) a + 1/a (iii) a2-1/a2
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Answered by
3
Step-by-step explanation:
a2 - 7a -1 = 0
D = b2 - 4ac
= 49 + 4
= 53
7 + root 53/ 2
it has no real roots so no real value of a
Answered by
4
Answer
- ( ¡ ) 5
- (¡¡) √ 29
the solution is in the attachment .
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