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Algebra 2 Help? 7 Questions?
1. Which expression is not a polynomial?
(Points : 3)
Option A: 9/5x+3
Option B: 5
Option C: 3x^3 + 5x - 4
Option D: 2x^-2
2. Use the polynomial to answer the question.
12x^3 + 5 - 5x2 - 6x2 + 3x3 + 2 - x
Which expresses the polynomial in standard form?
(Points : 3)
15x3 + 11x2 - x + 7
15x6 - 11x4 - x + 7
15x3 - 11x2 - x + 7
15x5 - 11x2 - x - 7
3. Use the expression to answer the question.
(5x2 - 4x + 5) - (3x2 - 6x + 2)
Which is equal to this expression?
(Points : 3)
2x2 - 10x + 7
2x2 - 2x + 3
2x2 + 2x + 3
15x2 - 10x + 7
4. Which is equal to (2x - 3)(5x + 4)?
(Points : 3)
10x2 - 12
10x2 + 23x +12
7x2 - 2x + 1
10x2 - 7x - 12
6. Use the polynomial to answer the question.
6a4 + 9a3 - 12a2
Which represents the polynomial in factored form?
(Points : 3)
3a2(2a2 + 3a - 4)
3a2(2a2 + 9a3 - 12a2)
3a2(3a2 + 9a3 - 12a2)
3a4(2a2 + 3a - 4)
7. Use the polynomial to answer the question.
36x2 - 25
Which represents the polynomial in factored form?
(Points : 3)
(18x - 5)(18x - 5)
(18x - 5)(18x + 5)
(6x + 5)(6x - 5)
(6x - 5)(6x - 5)
8. Use the polynomial to answer the question.
x2 - 9x + 20
Which represents the polynomial in factored form?
(Points : 3)
(x + 4)(x - 5)
(x + 4)(x + 5)
(x - 4)(x - 5)
(x - 4)(x + 5)
PLEASE HELP I'm SO CONFUSED :( Thank you so much...
3 Answers
- 8 years agoFavorite Answer
Question 1 is B because it is just a single number.
Q2 is C because you add all of the like terms and get it in its simplest form.
Q3 is B because its just like basic taking away- you take away all the terms that are the same so the squared ones, then the xs then the numbers.
Q4 is c because you times the 2x by 5x to get 10x2 then you times the 2x by the other numbers and then the 5x by the other numbers and then the non xs to get the four terms.
Q6 is a because you make it two squared numbers so 6xsquared and 5squared so then you put 6 and 5 in a bracket and put a minus sign in one and a plus in the other.
Q7 is 3 because you simplfy it out the x is a negative number so you know your 2 numbers in the bracket must be negative.
Hope this helps but if you would like me to explain it more let me know and i'll try and edit my answer :)
- 8 years ago
So easy!
For example, number 8.
x (I'm assuming squared) minus 9x plus 20
the numbers that add up to -9 must be multiplied to get 20.
So, 5+4= 9 and 5x4= 20.
The 9 is negative so it's (x-5)(x-4) aka the 3rd answer.
- Anonymous8 years ago
I know number one is option B.
Polynomial means consisting of more than one term.
Sorry I couldn't be of more help.
