If x + 1/x= 7, then find the value of x³+ 1/x³
Answers
Answered by
0
Answer:
the answer is 340
Step-by-step explanation:
if X+1/X =7
then
(x+1/x)³=x³+1/x³+3(x+1/x)
(7)³=x³+1/x³+3(7)
361=x³+1/x³+21
361-21=x³+1/x³
340=x³+1/x³
x³+1/x³=340
Similar questions