To subtract polynomials, you keep the sign of the first term, change subtraction to addition, and flip the sign of the second term. You then apply this process to every term in the polynomials. The document provides an example rule, two practice problems to try, and the answers to check your work.

1. Subtracting
Polynomials
KEEP CHANGE FLIP!

2. KEEP CHANGE FLIP!
Look at the picture above! All you do is:
KEEP the sign of the first term.
CHANGE subtraction to addition.
Flip the sign of the second term.

3. Subtracting Polynomials
With a POLYNOMIAL, you do it for EVERY term!

4. Your Turn!
Now you try some! Check your answers on the next
page.
1. (3x2 + 9x – 10) – (2x2 – 3x + 5)
2. (-4x2 – 6x – 3) – (2x2 – 10)
3. (8x2 + 6x + 9) – (3x2 + 12x – 8)

5. Answers
1. x2 + 12x – 15
2. -6x2 – 6x + 7
3. 5x2 – 6x + 17