Question

Y
Simplify;
(3x-2y) 3-(3x+2y)
3​

Answer 1

Resposta:

(3x-2y)³-(3x+2y)³

(3x)³-3*(3x)²*(2y) +3*(3x)*(2y)²-(2y)³ - [  (3x)³+3*(3x)²*(2y) +3*(3x)*(2y)²+(2y)³]

= (3x)³-3*(3x)²*(2y) +3*(3x)*(2y)²-(2y)³ -  (3x)³-3*(3x)²*(2y) -3*(3x)*(2y)²-(2y)³

= -3*(3x)²*(2y) -(2y)³ -3*(3x)²*(2y) -(2y)³

=-54x²y-16y³