From the sum of 3 + 4x and 5x² + 7x + 11 , subtract the sum of 3 + 9x and x² + x + 1 .
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Step-by-step explanation:
3+4x+5x²+7x+11-(3+9x+x²+x+1)
= 5x²+11x+14-(x²+10x+4)
=5x²+11x+14-x²-10x-4
=4x²+x+10
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