To solve this equation, we will first expand both sides using the distributive property.

Expanding the left side:
(-8x)(4x) + (-8x)(3) + (-1)(4x) + (-1)(3)
-32x^2 - 24x - 4x - 3

Expanding the right side:
(12x)(x) + (12x)(-1) + (-5)(x) + (-5)(-1)
12x^2 - 12x - 5x + 5

Now we can simplify both sides of the equation:

-32x^2 - 24x - 4x - 3 = 12x^2 - 12x - 5x + 5

Combining like terms:

-32x^2 - 28x - 3 = 12x^2 - 17x + 5

Next, we will move all terms to one side of the equation:

-32x^2 - 28x - 3 - 12x^2 + 17x - 5 = 0

Combine like terms:

-44x^2 - 11x - 8 = 0

Now we have a quadratic equation that we can solve using the quadratic formula:

x = (-(-11) ± sqrt((-11)^2 - 4(-44)(-8))) / 2(-44)

x = (11 ± sqrt(121 - 1408)) / -88

x = (11 ± sqrt(-1287)) / -88

Since the square root of a negative number results in imaginary solutions, this quadratic equation does not have real solutions.