Question

If x3–5x+7 is divisible by (x+2), then the remainder is
A.
0-21
B. O -20
C. O 17
D.
O 25​

Answer 1

Answer:

(3x-5+7)/x+2= 1

Step-by-step explanation:

write question properly

Answer 2

Answer:

A

Step-by-step explanation:

Correct option is A −21

Given f(x)=x3 −5x 2 +7 and divisor is x+2.

We put x+2=0

∴x=−2

According to remainder theorem,

If f(x) is divided by x−a, the remainder will be f(a).

Here, a=−2.

∴f(−2)=(−2) 3 −5(−2) 2 +7 =−21