Final answer:
The domain restrictions that apply to the rational expression x² / (x⁶ + 2x - 3) are x ≠ -1, x ≠ 1, x ≠ 3, x ≠ -2, x ≠ 2, and x ≠ -3.
Step-by-step explanation:
The domain restrictions that apply to the rational expression x² / (x⁶ + 2x - 3) are:
- x ≠ -1
- x ≠ 1
- x ≠ 3
- x ≠ -2
- x ≠ 2
- x ≠ -3
These restrictions are determined by the values that cause the denominator to be equal to zero, as division by zero is undefined.