MatemáticasBásico1 respuestas

(a + 3b + c)² + (a + 2b + c)² - 2(a + b + c) (a + 4b + c)?

(a + 3b + c)² + (a + 2b + c)² - 2(a + b + c) (a + 4b + c).

Mejor respuesta

10

(a + 3b + c)² + (a + 2b + c)²

a² + 9b² + c² + 6ab + 6bc + 2ac + a² + 4b² + c² + 4ab + 2ac + 4bc

2a² + 13b² + 2c² + 10ab + 10bc + 4ac

2(a + b + c)(a + 4b + c)

2(a² + 4ab + ac + ab + 4b² + bc + ac + 4bc + c²)

2a² + 8ab + 2ac + 2ab + 8b² + 2bc + 2ac + 8bc + 2c²

2a² + 10ab + 4ac + 8b² + 10bc + 2c²

(a + 3b + c)² + (a + 2b + c)² - 2(a + b + c)(a + 4b + c)

2a² + 13b² + 2c² + 10ab + 10bc + 4ac - (2a² + 10ab + 4ac + 8b² + 10bc + 2c²)

2a² + 13b² + 2c² + 10ab + 10bc + 4ac - 2a² - 10ab - 4ac - 8b² - 10bc - 2c²

4b².