Wat must be subracted from 2x² 3x+4 to get x ²³-12x-1
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2x² - 3x + 4 - (x² - 12x - 1)
= 2x² - 3x + 4 - x² + 12x + 1
= (2 - 1)x² + (-3 + 12)x + (4 + 1)
= x² + 9x + 5
2x² - 3x + 4 - (x²³ - 12x - 1)
= 2x² - 3x + 4 - x²³ + 12x + 1
= 2x² + (-3 + 12)x + (4 + 1) - x²³
= 3x² + 9x + 5 - x²³
2x² - 3x + 4 - (x² + 2x - 1)
= 2x² - 3x + 4 - x² - 2x + 1
= (2 - 1)x² + (-3 - 2)x + (4 + 1)
= x² - 5x + 5
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