Question

if a/b+b/a=-1,then a^3_b^3=

Answer 1

Answer:

0

Step-by-step explanation:

a/b+b/a=-1

(a²+b²)/ab=-1

a²+b²=-ab

a²+b²+ab=0

Now a³-b³=(a-b)(a²+b²+ab)

=(a-b)*0 ( as a²+b²+ab=0)

=0