Remainder theorem

All You Need in One Place

Everything you need for better marks in primary, GCSE, and A-level classes.

Learn with Confidence

We’ve mastered the UK’s national curriculum so you can study with confidence.

Instant and Unlimited Help

24/7 access to the best tips, walkthroughs, and practice questions.

0/4
?
Examples
Lessons
  1. Understanding the remainder Theorem
    Prove the Remainder Theorem
    Remainder theorem
    1. Finding the Remainder Using Synthetic Division and the Remainder Theorem
      Find the remainder when (4x37x+10)\left( {4{x^3} - 7x + 10} \right) is divided by (2x5)\left( {2x - 5} \right)
      1. Using synthetic division
      2. Using the remainder theorem
    2. When (8x3+ax2+bx1)\left( {8{x^3} + a{x^2} + bx - 1} \right) is divided by:
      i) (2x5)\left( {2x - 5} \right), the remainder is 5454
      ii) (x+1)\left( {x + 1} \right), the remainder is 30 - 30
      Find the values of aa and bb.
      Topic Notes
      ?
      You may want to refresh your memory on polynomial long division and synthetic division to better understand this lesson. The remainder theorem simply states that if a polynomial f(x) is divided by a linear expression x-r, the value of f(r) is equal to the remainder.
      \cdot When a polynomial, P(x)P(x), is divided by (xa)(x-a): Remainder =P(a)=P(a)
      \cdot When a polynomial, P(x)P(x), is divided by (axb)(ax-b): Remainder =P(ba)=P(\frac{b}{a})