Question

what is the answer for the 17th question?

Answer 1

pls answer

Answer 2

x^3 + 1/x^3 = (x + 1/x)(x^2 + x*1/x + 1/x^2)
= 7 ( 7^2 - 2 + 1) = 7*48

Answer 3

x^2+1/x^2 = (x+1/x)^2 - 2

Answer 4

idid nt understand a thing

Answer 5

a^3+b^3 = (a+b)(a^2-ab+b^2)
x^3 + 1/x^3 = (x + 1/x)(x^2 - x*1/x + 1/x^2)

Answer 6

7*47

Answer 7

how is 1/x^3 =b^3????

Answer 8

(1/x)^3 = 1/x^3

Answer 9

\[(x)^{3}+(1/x)^{3}= (x+1/x) (x ^{2}-x \times1/x+1/x ^{2})\]

Answer 10

\[= 7( ???????)\]

Answer 11

x^2+1/x^2 = (x+1/x)^2 - 2

Answer 12

7^2 - 2

Answer 13

cn u do it the equation way...itll be more helpful

Answer 14

\[ x^2+1/x^2 = (x+1/x)^2 - 2 = 49 -2 = 47\]

Answer 15

thank u

Answer 16

-x/1/x = -1

Answer 17

7*46

Answer 18

wait 1more doubt