Things to remember
What are the two methods for solving addition and subtraction?
Horizontal and Vertical
(7x2 + 5x3-6x+4) + (15x2 - 7x + 5x3-6)
10x3+ 22x2 - x -2
(7x2 + 5x3-6x+4) - (15x2 - 7x + 5x3-6)
-8x2 + x + 10
What are the rules for subtracting a polynomial from another polynomial ?
Remeber to distribute the -negative sign
What does not change when adding or subtracting like terms?
The variable and exponent
(9x + 9) + (-9x2 - 8x + 6)
-9x2 + x + 15
(10x2 + 9x - 8) - (9x2 - 4)
x2 + 9x - 4
62-43
39
What happens to the second polynomial (or the polynomial being subtracted) when subtracting polynomials?
The signs of the second polynomial change.
(-9x2 - 4x - 1) + (5x + 10)
-9x2 + x + 9
(-x2 - 4x + 1) - (2x2 + 9)
-3x2 - 4x - 8
4x-3x+6x-8x
-x
When adding and subtracting polynomials what do you combine?
Like terms
(7x2 + x + 1) + (-6x2 - 8x - 10)
x2 - 7x - 9
(2x2 - 4) - (-x2 + 3x - 6)
3x2 - 3x + 2
-42+44=?
2
What are Ms. Jenkins classroom expectations?
Appropriate language
Clean up after yourself
Be kind to yourself and your peers
No phones during instruction
(8x - 2) + (-3x2 - 7)
-3x2 + 8x - 9
(-6x2 - 10x + 4) - (8x2 - 8x)
-14x2 - 2x + 4
(13x2+14) + (10x -18)
13x2+10x-4