A. Identify whether the following equations are quadratic equations or not. 1. a(2a +5)=0
2. 4n²(n-2)= 0
3.7s +3 = -7
4. 2b(b-2) = -4
5. y² + 8y -4 = 0
2. 4n²(n-2)= 0
3.7s +3 = -7
4. 2b(b-2) = -4
5. y² + 8y -4 = 0
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