SOLUTION: This is confusing. My teacher may have written the question wrong, but I want to make sure. If it is written correctly, I don't know how to do this. The function f is defined by

Question 962539: This is confusing. My teacher may have written the question wrong, but I want to make sure. If it is written correctly, I don't know how to do this.
The function f is defined by f(x)=x^2-2x-24. If f(x+3)=x^2+kx-21, what is the value of k?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Use the definition to find the result of x+3 as input of the function. Examine the format of the general form expressions to determine k.

Definition:

Input (x+3):

You were given that .
You can simply equate the two formulas for f(x+3).

RELATED QUESTIONS
Find sin 210 : my question is that on my notes the teacher gave us it says 60 is the... (answered by rothauserc)

I have to write the phrases in my book as an algebraic expression and simplify if... (answered by ReadingBoosters)

Hi. My question is how do I write the following in simplified radical form by... (answered by Theo)

How do I solve this? -28x^2=4x. How do I make it equal 0? Its my last question on my hw... (answered by jim_thompson5910)

Hello there, I need some help with my homework :) the question is How many 4 digit... (answered by rothauserc,KMST)

Not sure how to type it, but the question is write the following radical in simplist form (answered by ankor@dixie-net.com)

Sherry’s teacher told her that if she was foiling conjugates she would not have any... (answered by ikleyn,MathTherapy)

This is a discussion question in my class. I have seen how a few other students have... (answered by stanbon)

This problem is not in my book, my teacher likes to make up his own questions. I can't... (answered by jim_thompson5910)