Question

if x+1/x=5 find the value of( x^3+1/x^3) -5(x^2+1/x^2) +(x+1/x)​

Answer 1

Answer:

Answer

Correct option is

C

4

x+6

15

−

x−2

1

=

x+2

6

(x+6)(x−2)

15(x−2)−1(x+6)

=

x+2

6

(x+6)(x−2)

15x−30−x−6

=

x+2

6

(x+6)(x−2)

14x−36

=

x+2

6

(14x−36)(x+2)=6(x+6)(x−2)

14x

2

−36x+28x−72=6x

2

+36x−12x−72

14x

2

−8x−72=6x

2

+24x−72

8x

2

=32x

hope it helps you✌