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Mathematics 22 Online
OpenStudy (anonymous):

I need help factoring completely on all these questions please. 3x2 + 17x + 10 2.5y8 - 125 3.a2 - 2ab - 15b2 4.4c2 - 12c + 9 5.p4 - 1 6.6y2 - 54 7.x2 + 10x + 21 8.a2 - 10ab + 3b2 9.5x2 - 10x 10.x2 + 12xy + 35y2

OpenStudy (anonymous):

1) (3x +2)(x +5)

OpenStudy (anonymous):

I need to show my teachers the work, not just answers.

OpenStudy (anonymous):

@ScarlettGrace<3

OpenStudy (anonymous):

ax^2+bx+c

OpenStudy (anonymous):

so you need 2 numbers that if you multiply them you will get c

OpenStudy (anonymous):

and if you add them you will get b ( if a=1)

OpenStudy (anonymous):

a=3 b=17 , c=10 2*5=10 2+5*3=b

OpenStudy (anonymous):

@ScarlettGrace<3

OpenStudy (anonymous):

2) 5y8-125 factor 5 out 5(y8-25)

OpenStudy (anonymous):

Here's an example on how to do it, if you need more examples let me know.

OpenStudy (anonymous):

@party_girl

OpenStudy (party_girl):

I don't know sorry!

OpenStudy (anonymous):

That's ok, thanks anyway.

OpenStudy (party_girl):

yep

OpenStudy (shadeyghost):

ok, do you know how to use the equations tool?

OpenStudy (anonymous):

I think so, why?

OpenStudy (shadeyghost):

can you write the questions with that please?

OpenStudy (anonymous):

\[3x^2 + 17x + 10\]

OpenStudy (anonymous):

\[5y^8 - 125\]

OpenStudy (shadeyghost):

that makes it alot eaasier

OpenStudy (anonymous):

\[a^2 - 2ab - 15b^2\]

OpenStudy (shadeyghost):

i dont remember this as well as i should

OpenStudy (anonymous):

\[4c^2 - 12c + 9\]

OpenStudy (shadeyghost):

@ganeshie8

OpenStudy (anonymous):

\[p^4 - 1\]

OpenStudy (anonymous):

\[6y^2 - 54\]

OpenStudy (anonymous):

\[x^2 + 10x +21\]

OpenStudy (anonymous):

\[a^2 - 10ab + 3b^2\]

OpenStudy (anonymous):

@ScarlettGrace<3

OpenStudy (party_girl):

@ScarlettGrace<3

OpenStudy (party_girl):

it not tagging her

OpenStudy (shadeyghost):

@ScarlettGrace<3

OpenStudy (shadeyghost):

wierd

OpenStudy (anonymous):

\[5x^2 - 10x\]

OpenStudy (anonymous):

\[x^2 + 12xy + 35y^2\]

OpenStudy (shadeyghost):

@ScarlettGrace<3

OpenStudy (anonymous):

ight im here sorry about that

OpenStudy (anonymous):

That's ok.

OpenStudy (anonymous):

okay so first question. What would u do first?

OpenStudy (anonymous):

Look to see if there is a GCF?

OpenStudy (anonymous):

yes correct

OpenStudy (anonymous):

I don't see a GCF, do you?

OpenStudy (anonymous):

@ScarlettGrace<3

OpenStudy (anonymous):

no i do not so what would u do next?

OpenStudy (anonymous):

Determine which factoring method to use on the parentheses part. Since there are two terms inside the parentheses, let's try difference of squares.

OpenStudy (anonymous):

At least that's what I got from the lesson at school.

OpenStudy (anonymous):

Correct!! ur doing great!

OpenStudy (anonymous):

Yeah there's a problem. On the first question there's no parentheses since there's no GCF.

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