Subtract the sum of (3x2 – 5x + 7), (–x2 + 2x + 3) and (–x + 7) from the sum of (2 – 3x + 7x2) and (7 – 2x + 2x2).
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Subtract the sum of 3x2 – 5x and –x2 + 2x + 3 from
the sum of 2+3x and 7-2x + 2x2
2
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