(x + 3) is a factor in x^2 - mx - 15. What is the value of m?
Choose the correct choice from the following options.
A) 1  B) 2  C) 3  D) 4  E) 5
I solved the second degree equation and found it like this:   x^2 - mx - 15 = 0   (x-5)(x+3) = 0   x=5 or x= -3   Substituting both values for x in the equation we find:   x^2 - mx -15   =&gt; (-3)^2 - m(-3) = 15   =&gt; 9+ 3m= 15   =&gt; 3m = 15-9= 
<gadget id="calculator">15-9</gadget>
<output>6</output>
6=&gt; m = 2   And with 5, using a similar process we end up with:   (5)^2 - m(5) =15   -5m = 15-25= -10   m=2   Ao,ANS 2
<result>B</result>
(x + 3) is a factor in x^2 - mx - 15. What is the value of m?