Question

(b)x +1 is a factor of x + 9x2 + ax +15​

Answer 1

Answer:

x+1=0

x=-1

put the value pf x in the equation

then u will get the value of a

then put the value of a in the equation and divide the equation byx+1

u will surely get ur answer

i m 100% sure

hope this helps u

Step-by-step explanation: