Let f(x) = x^2 + bx + c. If f(5) = 0 and f(-3) = 0, then b + c =
Choose the correct choice from the following
A) 18  B) -17  C) -15  D) -21  E) -24
f(x) = x^2 + bx + c. If f(5) = 0 and f(-3) = 0, then b + c =   f(5) = 0= 25+5b+c--- Taking 25 to the other side   -&gt; 5b+c= -25   f(-3) = 0= 9-3b+c --- taking -3b+c to the other side   -&gt; 3b-c=9   When we add these 2 equations, we get 8b= -16---&gt; b= -2   And while substituting b= -2 we get c= -15.   b+c= -17--- Answer -17
<result>B</result>
Let f(x) = x^2 + bx + c. If f(5) = 0 and f(-3) = 0, then b + c =