Question

c) If x=1/5-x
and x# 5 find x³+1/x³​

Answer 1

Step-by-step explanation:

As,x=1/5-x

x+x=1/5

2x=1/5

x=1/10 ----(i)

Now, we have to find the value of

${x}^{3} + 1 \div {x}^{3}$

By putting the value of x from equation (i), we get

${1 \div 10}^{3} + {10 \div 1}^{3}$

=0.001+1000

=1000.001 <–ANS

I hope this may help you.