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-4x^2=-5x+4
We move all terms to the left:
-4x^2-(-5x+4)=0
We get rid of parentheses
-4x^2+5x-4=0
a = -4; b = 5; c = -4;
Δ = b2-4ac
Δ = 52-4·(-4)·(-4)
Δ = -39
Delta is less than zero, so there is no solution for the equation
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