Problem 173 of 7
Find the missing coefficient given quotient or remainder data dividing x^3+ax+1 by x-2 gives remainder 7.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
use division identity to solve.
Hidden until you reveal it.
Use the division identity or Remainder Theorem to solve for unknown coefficient.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Write dividend=divisor*quotient+remainder or p(a)=r.
2. Substitute known pieces.
3. Compare coefficients or solve the resulting equation.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Solving from an unrelated evaluation point.