Question

find the number which should be added to x²+x+3 so that the resulting polynomial is completly divisible by (x+3)​

Answer 1

Step-by-step explanation:

let the repquired number be k.

let

f(x)=x²+x+3+k

it is given that f(x) is divisible by (x+3)

therefore,

remainder=0

f(-3)=0

(-3)²+(-3)+3+k=0

9-3+3+k=0

9+k=0

k= -9

thus the required no. is -9

Answer 2

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