Answer:
remaining length: 5y² + 6y + 12
Explanation:
new length = original length - length cut
solve for new length:
6y² + 6y + 1 - (y² - 11)
6y² + 6y + 1 - y² + 11
6y² - y² + 6y + 11 + 1
5y² + 6y + 12
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