Question

Help with Math please? Fan and medal
what is the remainder when x^2 -5x-22 is divided by x+3?
A)-16
B)2
C)6
D)-48

Answer 1

You can do the long division you need or you can use the remainder theorem.
The remainder theorem is that if you evaluate a polynomial at x = k, it gives you the reminder of the division of the polynomial by x - k.

Answer 2

In your case, you are dividing by x + 3, so to put it in the form x -k,
you need to write x - (-3)
That means your k = -3.
If you evaluate the polynomial at x = -3, you'll find the remainder of dividing the polynomial by x + 3.

Answer 3

let p(x) = x^2 -5x-22
replace x with -3 and simplify [as mathstudent55 written above]

Answer 4

@AloneS
@Yuliacosta111
@ganeshie8
@dan815
@sweetburger

Answer 5

What part of my explanation and daykar's explanation did you not understand?
Why don't you ask us questions since we already answered yours, instead of asking another 5 people to answer?