A³ + 7 a² - 18 a = 0?
A³ + 7 a² - 18 a = 0.
A³ + 7 a² - 18 a = 0.
En resumen
Resolver : a³ + 7a² - 18a = 0 Factorizamos a (a² + 7a - 18) = 0 a ( a + 9)( a - 2) = 0 Tiene 3 soluciones 1) a = 0 2) a + 9 = 0 a = - 9 3) a - 2 = 0 a = 2.
Resolver :
a³ + 7a² - 18a = 0 Factorizamos
a (a² + 7a - 18) = 0
a ( a + 9)( a - 2) = 0
Tiene 3 soluciones
1)
a = 0
2)
a + 9 = 0
a = - 9
3)
a - 2 = 0
a = 2.