Six students are working to simplify the expression shown.
Drag each student's answer to a box to show whether it is fully simplified, equivalent to the given expression but not fully simplified, or not equivalent to the given expression.

4y - 8x² - 5 + 14x² + y - 1

1. 3y + 6x² + 6

2. 3y + 6x² - 5 - 1

3. 5y + 6x² - 6

4. 5y - 6x² - 5 - 1

5. 5y - 8x² - 6 + 14x²

6. 4y + 6x² - 6 + y

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.