Find the discriminant of the quadratic 5x^2 - 2x + 8 - 2x^2 + 6x + 2.
Combine like terms 3x2 + 4x + 10
When a quadratic is in the form ax2 + bx + c
the discriminant is (b2 – 4ac)
In this case, that's (42) – (4)(3)(10) = 16 – 120 = – 104
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+355 
