How can x2 + 3x + 1 = 2x2 + 2x + 3 be set up as a system of equations?

The answer is:

y = x² + 3x + 1

y = 2x² + 2x + 3

If a = b = y, then a = y and b = ?

Our expression is x² + 3x + 1 = 2x² + 2x + 3

Let x² + 3x + 1 = 2x² + 2x + 3 = y

Therefore

x² + 3x + 1 = y

2x² + 2x + 3 = y

Now we have the system of two equations:

1. y = x² + 3x + 1

2. y = 2x² + 2x + 3