9. What should be added to 5x3 - 11x2 - 4 to get 10x3 - 4x2 + 6.
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( 10x³ - 4x² + 6 ) - ( 5x³ - 11x² - 4 )
= 10x³ - 5x³ - 4x² + 11x² + 6 - 4
= 5x³ + 7x² + 2 .
5x³ + 7x² + 2 should be added to
5x³ - 11x² - 4 to get 10x³ - 4x² + 6.
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Step-by-step explanation:
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