Answer: try the 62
Step-by-step explanation:

has characteristic equation

which has roots at

. The negative root has multiplicity 2. So the general solution is
Answer: Infinite solutions.
Step-by-step explanation:

Plug the value of y into the second equation.

Add 12 on both sides.

Add 4x on both sides.


1. 12-9×3×4+3=-93
2.3+4×3×9-12=99
3. 12-9+3×9×3×4=327