SOLUTION: Im having trouble with the following question. Use the discriminant to determine whether the given quadratic polynomial can be factored, then factor it if it is not prime. Match

Question 154786: Im having trouble with the following question.
Use the discriminant to determine whether the given quadratic polynomial can be factored, then factor it if it is not prime. Match your result to the correct answer below.
�8x2 � 3x � 5
1)(�8x � 5)(x � 3)
2)(x � 3)(x � 5)
3)(�8x � 3)(x � 5)
4)The expression is prime.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
�8x^2�3x�5
USING THE QUADRATIC EQUATION WE GET COMPLEX ROOTS = ANSWER 4).

x=(3+-sqrt[-3^2-4*-8*-5])/2*-8
x=(3+-sqrt[9-160])/-16
x=(3+-sqrt-151)/-16
x=(3+-12.29i)/-16
x=3/-16+-12.29i/-16
x=-0.1875+-0.768i

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