Answer:
Zero.
Step-by-step explanation:
The determinant of the coefficient matrix of the system is zero, since every coefficient is equal to zero.
Answer:

Step-by-step explanation:
Answer:
5a²+22a+8
Step-by-step explanation:
(5a+2)(a+4)
5a² + 20a + 2a + 8
5a² + 22a + 8