Question

find the value of (1/3)-³ +(1/4)-³+(1/5)-³​

Answer 1

Answer:

use formula a^3+ b^3+c^3-3abc= (a+b+c) (a^2+b^2+c^2-ab-bc-ca)

Answer 2

Answer:

$- \frac{1}{27} - \frac{1}{64} - \frac{1}{125}$

=-0.037-0.015-0.008

= -0.06