Question

if (x+3) is the factor of
the polynomial
x3_2mx+2,then
find the value of m​

Answer 1

Answer:

Let p(x)=x

3

−2mx+21

(x+3) is the factor of the polynomial p(x)=x

3

−2mx+21

∴p(−3)=0

⇒p(−3)=0

⇒(−3)

3

−2m×(−3)+21=0

⇒−27+6m+21=0

⇒6m=6

∴m=1

Thus , the value of m is 1.