Question

plz solve this and dont post irrelevant answers ​

Answer 1

Answer:

Value of a³+b³-3ab = -1

Step-by-step explanation:

Given a+b=-1 ----(1)

On cubeing both sides of equation (1), we get

(a+b)³ = (-1)³

we know the algebraic identity:

=> a³+b³+3ab(a+b)= -1

=> a³+b³+3ab(-1)=-1

/* from (1)*/

=> a³+b³-3ab = -1

Therefore,

Value of a³+b³-3ab = -1