Question

if x +1 is factor of x³ +a then find a​

Answer 1

Answer:

Step-by-step explanation:

x + 1 = 0

x = -1

x³ + a = 0

-1³ + a = 0

-1 + a = 0

-1 = -a

a = 1

Answer 2

given

X+1 is a factor

X+1=0

X = -1

x³-a

= (-1)³-a=0

-1-a=0

-a = 1

a = -1 is your answer...

checking;.

keep -1 in a place

(-1)³-(-1)=0

-1+1=0

0=0

so a value is -1