Problem 69 of 7
Find the missing coefficient so x-5 is a factor of x^3 - 4x^2 - 7x + m.
Hints
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
set p(a)=0 and solve.
Hidden until you reveal it.
Set p(a)=0 and solve for the unknown coefficient.
Enter your answer
No answer yet
Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
Walkthrough shown
Full solution stays hidden until you ask for it.
1. Identify a from the divisor.
2. Substitute a into the polynomial.
3. Set the result equal to zero and solve.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Solving p(a)=a instead of p(a)=0.