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4(x-3)-(x+4)*x=5x-2x
We move all terms to the left:
4(x-3)-(x+4)*x-(5x-2x)=0
We add all the numbers together, and all the variables
4(x-3)-(x+4)*x-(+3x)=0
We multiply parentheses
-x^2+4x-4x-(+3x)-12=0
We get rid of parentheses
-x^2+4x-4x-3x-12=0
We add all the numbers together, and all the variables
-1x^2-3x-12=0
a = -1; b = -3; c = -12;
Δ = b2-4ac
Δ = -32-4·(-1)·(-12)
Δ = -39
Delta is less than zero, so there is no solution for the equation
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