Question

a (a + b)² – (a – b)²?*​

Answer 1

Respuesta:

productos notables

a (a + b)² – (a – b)²

a ( a² +2ab + b²) - ( a² -2ab + b²)

a³ +2a²b +ab² - a² + 2ab - b²

Answer 2

$a(a + b {)}^{2} - (a - b {)}^{2} = \\ a( {a}^{2} + 2ab + {b}^{2} ) - ( {a}^{2} - 2ab + {b}^{2} ) \\ = \bf \: {a}^{3} + 2 {a}^{2} b + a {b}^{2} - {a}^{2} + 2ab - {b}^{2}$