Question

(x + y)3 - (x - y)3 when x = 2 and y=-1​

Answer 1

Step-by-step explanation:

When x = 2 and y = -1,

(x + y)³ - (x - y)³

= (2 - 1)³ - [2 - (-1)]³

= (1)³ - (3)³

= 1 - 27

= -26.