Question

b) if x+4 is a factor of the polynomial x2 + 3x + m, the value of m
is

(1 mar!​

Answer 1

Answer:

m= -4

Step-by-step explanation:

x+4 is factor of x

2

+3x+m

x+4=0

x=−4 is zero of polynomial

Put it in polynomial

(−4)

2

+3(−4)+m=0

16−12+m=0

m=−4

Answer 2

Answer:

x+4=0

x=-4

keeping the value of x= -4 in the polynomial,

x²+3x+m=0

(-4)²+3*(-4)+m =0

16-12+m=0

4+m=0

m=-4

hope this helps you..