Raul is attempting to factor the expression 3x^2-14x-5. in his first step, he rewrites the expression as 3x^2+15x-x-5. which of the following statements in true about raul’s work?
a.

raul’s first step is correct. he should continue to factor the expression.
b.

the two middle coefficients add to the correct number, but do not multiply to the correct number.
c.

the two middle coefficients multiply to the correct number, but do not add to the correct number.
d.

the two middle coefficients do not add or multiply to the correct number.

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