Answer:
Collect like terms.
(2x+5x-9x-2x)-{x}^{11}+3{x}^{2}(2x+5x−9x−2x)−x11+3x2
Simplify.
-4x-{x}^{11}+3{x}^{2}−4x−x11+3x2
Done
7x - 9x - 2x+ 3x^2 - x^2
7x - 11x + 2x^2
2x^2 - 4x
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