Question

if x +1 is factor of ax2+x2-2x+4a-9 find value of a

Answer 1

x+1 is a factor

f(x)=ax²+x²-2x+4a-9

0=a(-1)²+(-1)²-2(-1)+4(a)-9

0=a+1+2+4a-9

0=5a-6

6/5=a

Answer 2

If x+1 is factor of ax^2+x^2-2x+4a-9