Verified Answer :

To solve this equation, we have to use the distributive property to multiply 5y through the parentheses. 

-45y - 15y^2 = 13

-15y^2 - 45y - 13 = 0 

15y^2-45y-13=0
y=32+130√2805 or y=32−130√2805, when you use the quadratic formula.

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