Question

if a+b=-1 where a is not equal to 0 & b is not equal to 0 then find the value of a cube - b cube

Answer 1

a3+b3+3ab−1+3ab(a+b)−3ab(a+b)=0  

⟹(a+b)3−13−3ab(a+b−1)=0  

⟹(a+b−1)((a+b)2+1+a+b)−3ab(a+b−1)=0  

⟹(a+b−1)(a2+b2+ab  +a+b+1)=0  

Hence

a+b=1be

Answer 2

Step-by-step explanation:

the answer is above given have a great day ahead in your life