Find the discriminant of the quadratic $5x^2 - 2x + 8 - 3x^2 + 8x + 12.$
5x2 – 2x + 8 – 3x2 + 8x + 12
Combine like terms 2x2 + 6x + 20
When in the form ax2 + bx + c the discriminant is b2 – 4ac
62 – (4)(2)(20)
36 – 160
–124 is the discriminant
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+1768 
