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Mathematics 15 Online
OpenStudy (anonymous):

@bluediamond1999

OpenStudy (anonymous):

What is the question?

OpenStudy (anonymous):

(5x^2-4x-1)-(-4x^2-4)

OpenStudy (anonymous):

x^2-4x-3 is this the asnwer

OpenStudy (anonymous):

Okay. First, we need to remove the parentheses. We can just remove them from the first polynomial. For the second one, however, we must multiply each term in the second polynomial by -1.

OpenStudy (anonymous):

Hang on a minute. I'm solving it now. I will let you know if you are correct.

OpenStudy (anonymous):

It looks like you forgot to distribute the negative one. Try again. Apart from that, you did it correctly. :-)

OpenStudy (anonymous):

-9x^2-8x-1

OpenStudy (anonymous):

The first term should be positive. Do you want me to tell you the answer or walk you through it?

OpenStudy (anonymous):

tell me the answer plz

OpenStudy (anonymous):

9x^2 - 4x + 3

OpenStudy (anonymous):

After you distribute the -1, you are left with the following: 5x^2 - 4x - 1 + 4x^2 + 4

OpenStudy (anonymous):

can you see the attached file

OpenStudy (anonymous):

You then combine like terms 5x^2 + 4x^2 = 9x^2 -4x = -4x -1 + 4 = 3 9x^2 - 4x + 3

OpenStudy (anonymous):

Okay. I'm looking at the attachment now.

OpenStudy (anonymous):

I'm not sure what those squares mean. I have never seen anything like it

OpenStudy (anonymous):

i got more questions if you dont mind @bluediamond1999

OpenStudy (anonymous):

That's fine. :-)

OpenStudy (anonymous):

OpenStudy (anonymous):

We need to subtract. 6x^2 + 2x - 2 - 5x^2 - 8x - 6

OpenStudy (anonymous):

I'm not sure if we should have them in parentheses and distribute a -1 or not

OpenStudy (anonymous):

I think there should be parentheses. (6x^2 + 2x - 2) - (5x^2 - 8x - 6) 6x^2 + 2x - 2 - 5x^2 + 8x + 6 x^2 + 10x + 4

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