Subtract the sum of 3y – y
2 + 7 and -2y – 3 – 5y2
from 7.
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Answer:
= (3y - y² + 7) + (-2y - 3 - 5y²)
= 3y - y² + 7 - 2y - 3 - 5y²
= y - 6y² + 4
subtracting y - 6y² + 4 from 7
= 7 - ( y - 6y² + 4)
= 7 - y + 6y² - 4
= 3 - y + 6y²
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