Question

If (x + 1/x)= 4, then find-
(a) (x-1/x)
(6) (x²+1 612)​

Answer 1

Answer:

We have

(x+1)(x+6)(x−4)

1−11x

=

x+1

A

+

x+6

B

+

x−4

C

Multiply on both sides by (x+1)(x+6)(x−4)

1−11x=A(x+6)(x−4)+(x+1)(x−4)B+(x+1)(x+6)C

Substitute x=−6

1+66=B(1−6)(−6−4)

Therefore, B=

50

67

Answer 2

Answer:

(6) (x²+1 612)

Step-by-step explanation:

(a) (x-1/x) ×