×-2; 2x³ - 11x² - 8x ± 11
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(×-2) (2x³ - 11x² - 8x ± 11)
= (2x^4- 11x^3- 8x^2+11x) -(4x^3- 22x^2 -16x+ 22)
= 2x^4- 11x^3- 8x^2+11x -4x^3+ 22x^2 +16x- 22
= 2x^4- 15x^3+ 14x^2+ 17x-22
Step-by-step explanation:
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