Explanation:
Since we have given that
-3(y-y)^2-9+7y
Simplification needs a few steps:
-3(y-5)^2-9+7y
=-3(y^2+25-10y)-9+7y
=-3y^2-75+30y-9+7y
=-3y^2+37y-84
Answer:
B,E
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