Question

) If a + /a=4 find the value of

(i) a2 + ⅟a2


(ii) a4 + ⅟a4

Answer 1

Answer:

please follow me

Step-by-step explanation:

It is given that,

(a

2

+1)/a=4

a

2

/a+1/a=4

a+1/a=4

So by multiplying the expression by 2a,

we get

2a

3

+2/a

3

=2[a

3

+1/a

3

]

=2[(a+1/a)

3

−3(a)(1/a)(a+1/a)]

=2[(4)

3

−3(4)]

=2[64−12]

=2(52)

=104