Question

Is y + 3 a factor of y4 + y2 - 20?​

Answer 1

Step-by-step explanation:

y +3 = 0

y = -3

put -3 in place of y

(-3)4 +(-3)2-20 = 0

81 + 9 - 20 = 0

70 = 0

hence it is not factor

Answer 2

Answer:

No it is not because

Step-by-step explanation:

y = -3

(-3)4 + (-3)2 - 20

(-12) + (-6) - 20

-12-6-20

-18-20

-38

So , no it's not