If a + b = –1, then the value of a3
+ b3
– 3ab is

Asked by suhaasgunisetti6946 | 2nd May, 2020, 01:40: PM

Expert Answer:

Given: a+b=-1 ... (i)
(a+b)3=(-1)3
a3+b3+3ab(a+b)=-1
a3+b3+3ab(-1)=-1  .... Using (i)
a3+b3-3ab=-1

Answered by Renu Varma | 2nd May, 2020, 04:33: PM