Question

check whether 1+2x is a factor of x3+5x.​

Answer 1

Answer:

yes it is

1+2x is factor of x3 + 5x

Answer 2

Answer: 1+2x is not a factor of x3+5x

Step-by-step explanation: If 1 + 2x is a factor of x³ + 5x

Using factor theorem :

2x +1 =0

2x = 1

x = 1/2

p(x) = x³ + 5x

= (1/2)³ + 5(1/2)

1/8 + 5/2 which is not equal to 0

therefore 1+2x is not a factor of x3+5x