To find the area of a rectangle, we typically need the lengths of two adjacent sides. However, in your message, it appears you want to factor or evaluate a polynomial expression rather than directly finding a rectangle's area.
Given:
- \( -12x^6 + 15x^3 \)
- \( 12x^6 - 15x^3 \)
- \( -12x^9 + 15x^3 \)
- \( -x^3 + 5 \)
- \( 11x^3 - 2 \)
- \( -4x^3 + 5 \)
None of these represent a rectangle in the traditional sense, but if we interpret them as possible expressions to evaluate or simplify, we can help with that.
If you intended to find the area of a rectangle formed by some expressions provided, you would need to provide the lengths of the sides (which could be two of the expressions). Could you clarify what specifically you need help with?