Question

a³ + 7 a² - 18 a = 0

Answer 1

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