Question

A few quick Addition and Subtraction of Polynomials help?

Answer 1

Question 2 (Fill-In-The-Blank Worth 2 points)

Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 5x − 1). If the final answer is written in the form Ax2 + Bx + C, what is the value of A?

Numerical Answers Expected!

Answer for Blank 1:
Question 3 (Multiple Choice Worth 1 points)

Simplify: (4x − 6) + (5x + 1)

9x + 5

9x − 5

x − 5

−x − 5

Question 4 (Multiple Choice Worth 1 points)

Simplify: (4x − 6) − (3x + 6)

x − 12

−x − 12

x + 12

−x + 12

Question 5 (Multiple Choice Worth 2 points)

Simplify: (3x2 − 2) + (2x2 − 6x + 3)

5x2 − 6x + 1

5x2 − 6x − 1

x2− 6x + 1

5x2 − 8x + 3

Question 6 (Fill-In-The-Blank Worth 2 points)

Simplify the following expression: (x − 8y) - (2x − 4y). If the final answer is written in the form Ax + By, what is the value of B?

Numerical Answers Expected!

Answer for Blank 1:

Answer 2

Please help, and thank you!

Answer 3

1st one...(5x2 + 3x + 4) − (2x2 + 5x − 1) you don't need the brackets as both do not need to be multiplied
5x^2 + 3x + 4 - 2x^2 + 5x - 1
add/subtract what should be added/subtracted like 5X^2 - 2x^2 will be 3x^2
leaving 3x^2 + 3x + 4 + 5x - 1
and continue from there
the other questions are the same just get rid of the brackets as the brackets aren't multiplied together

Answer 4

How would you get rid of the x? Because I got 20x...

Answer 5

And it has to be a numerical answer.

Answer 6

don't multiply them together and the answers to choose from consists of 'x' so you shouldn't get rid of them

the numerical answer is the number beside 'x'

Answer 7

20?

Answer 8

the first one from where i left it 3x^2 + 3x + 4 + 5x - 1
simplify it 3x + 5x is 8x and 4 - 1 is 3
so the whole expression will be
3x^2 + 8x + 3
as you can see it is in the form Ax^2 + Bx + C so Ax^2 is 3x^2
so A will be 3

Answer 9

oh, okay thanks