CBSE Class 9 Answered
If a + b = –1, then the value of a3
+ b3
– 3ab is
Asked by suhaasgunisetti6946 | 02 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 | 02 May, 2020, 04:33: PM
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