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(-3/10)x=9
We move all terms to the left:
(-3/10)x-(9)=0
Domain of the equation: 10)x!=0We multiply parentheses
x!=0/1
x!=0
x∈R
-3x^2-9=0
a = -3; b = 0; c = -9;
Δ = b2-4ac
Δ = 02-4·(-3)·(-9)
Δ = -108
Delta is less than zero, so there is no solution for the equation
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