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-5x(-3x+2)-4x=-48
We move all terms to the left:
-5x(-3x+2)-4x-(-48)=0
We add all the numbers together, and all the variables
-4x-5x(-3x+2)+48=0
We multiply parentheses
15x^2-4x-10x+48=0
We add all the numbers together, and all the variables
15x^2-14x+48=0
a = 15; b = -14; c = +48;
Δ = b2-4ac
Δ = -142-4·15·48
Δ = -2684
Delta is less than zero, so there is no solution for the equation
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