Final answer:
Tyra made a mistake in Step 4 while factoring the quadratic equation. The correct product of polynomials is (x-4)(x+6).
Step-by-step explanation:
Tyra made the mistake in Step 4, where she incorrectly factored the quadratic equation. Instead of factoring as x(x-4)-6(x-4), she should have factored it as (x-4)(x+6).
The correct product of polynomials is (x-4)(x+6).