Question

simplifique as expressoes algebricas (a³ - b³)(a + b) - ( a² + b²) (a² - b²)

Answer 1

[( a³ - b³) ( a + b)] - [ ( a⁴ - b⁴ )]
[ a⁴ - ab³ - a³b + b⁴ - a⁴ + b⁴ ]  =
( 2b⁴ - ab³ - a³b ) = b(2b³ - ab² - a³) *****