-4x(-3x+7)=-64

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Solution for -4x(-3x+7)=-64 equation: 



-4x(-3x+7)=-64

We move all terms to the left:

-4x(-3x+7)-(-64)=0

We add all the numbers together, and all the variables

-4x(-3x+7)+64=0

We multiply parentheses

12x^2-28x+64=0

a = 12; b = -28; c = +64;
Δ = b2-4ac
Δ = -282-4·12·64
Δ = -2288
Delta is less than zero, so there is no solution for the equation

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