Question

if x2-5x-7 is divisible by x-2 then what is remainder​

Answer 1

Answer:

hii

Step-by-step explanation:

Given f(x)=x  

3

−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