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15x(0.2-x)=6
We move all terms to the left:
15x(0.2-x)-(6)=0
We add all the numbers together, and all the variables
15x(-1x+0.2)-6=0
We multiply parentheses
-15x^2+3x-6=0
a = -15; b = 3; c = -6;
Δ = b2-4ac
Δ = 32-4·(-15)·(-6)
Δ = -351
Delta is less than zero, so there is no solution for the equation
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