Question

If x2 +1/x^2= 14, then the value of x^3+1/x ^3 is

(1) 52
(2) 42
(3) 24
(4)25​

Answer 1

Answer:

42 is the ans for ur question

Step-by-step explanation:

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Answer 2

Answer:

answer is 52

Step-by-step explanation:

as x2+1/x2= 14

(x+1/x)2=x2+1/x2+2x*1/x

           =14+2=16

x+1/x=4

now (x+1/x)3=x3+1/x3+3x*1/x(x+1/x)

    (4)3=x3+1/x3+3*4

  64-3*4=x3+1/x3

64-12=52=x3+1/x3