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10x-(15x^2)=85
We move all terms to the left:
10x-(15x^2)-(85)=0
determiningTheFunctionDomain -15x^2+10x-85=0
a = -15; b = 10; c = -85;
Δ = b2-4ac
Δ = 102-4·(-15)·(-85)
Δ = -5000
Delta is less than zero, so there is no solution for the equation
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