Vocabulary and Standard Form
Name the coefficients in the expression:
3x^2-5x+2
What is / are: 3, -5, and 2
Add:
(2x+5)+(3x+1)
What is: 5x+6
Subtract:
(4x+7)-(2x+3)
2x+4
Error?
(x+5)-(x-2)=3
Did not distribute the negative answer = 7
What is the degree of this polynomial?
4x^3-2x^5+7
What is 5
Add:
(x^2-4x)+(3x^2+7x)
What is:
4x^2+3x
Subtract:
(5x^2+2x)-(3x^2+5x)
2x^2-3x
Error:?
3x^2+4x^2=7x^4
The exponents don't add
7x^2
Rewrite in standard form:
5x-3+2x^3
What is:
2x^3+5x-3
Add:
(2x^2-3x+5)+(x^2+5x-2)
What is:
3x^2+2xx+3
Subtract:
(x^2-6x+4)-(2x^2-3x+1)
-x^2-3x+3
Error:?
(2x^2+3)-(x^2-4) = x^2-1
Didn't distribute the negative to negative 4:
What are the degree and the number of terms for:
-7x^2+4x
What is 2 and 2
Add:
(4x^3-2x+7)+(3x^2+5x-4)
What is:
4x^3+3x^2+3x+3
Subtract:
(3x^3-5)-(2x^2+4x-1)
3x^3-2x^2-4x-4
Error:?
(5x^2-2x)+(2x^2+2x)=7x^2-4x
Combined -2x and +2x into -4x but they cancel to 0
Is the following a polynomial? And why not?
7x^10-2x^4+7x^-1+8
No, because it has a negative exponent
Add:
(6x^2-x+4)+(2x-7+x^2)
What is:
7x^2+x-3
Subtract The first from the second.
(3x^2-4x+7)
(x^2-x-2)
-2x^2+3x-9
Error:?
(3x^2+5x)+(2x+1)=5x^2+6x
Cannot combine
3x^2
5x
2x