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x=0.1x^2+2.4x+25
We move all terms to the left:
x-(0.1x^2+2.4x+25)=0
We get rid of parentheses
-0.1x^2+x-2.4x-25=0
We add all the numbers together, and all the variables
-0.1x^2-1.4x-25=0
a = -0.1; b = -1.4; c = -25;
Δ = b2-4ac
Δ = -1.42-4·(-0.1)·(-25)
Δ = -8.04
Delta is less than zero, so there is no solution for the equation
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