-4x2+16x=21

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Solution for -4x2+16x=21 equation: 



-4x^2+16x=21

We move all terms to the left:

-4x^2+16x-(21)=0

a = -4; b = 16; c = -21;
Δ = b2-4ac
Δ = 162-4·(-4)·(-21)
Δ = -80
Delta is less than zero, so there is no solution for the equation

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