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Mathematics 7 Online
OpenStudy (anonymous):

What are the factors of 3x2 + 10x + 3? (3x − 1)(x − 3) (3x − 3)(x − 1) (3x + 1)(x + 3) (3x + 3)(x + 1)

OpenStudy (anonymous):

@cuitiefromthesouth2

OpenStudy (anonymous):

can you please explain it.

OpenStudy (shamil98):

Try factoring out the equation... Both bx and c are positive.

OpenStudy (shamil98):

Therefore we know that the factors will be both be positive.

OpenStudy (shamil98):

You can therefore eliminate option A and B

OpenStudy (shamil98):

From there, which one of those would result in your original equation? 3x^2 + 10x + 3

OpenStudy (shamil98):

(3x +1)(x+3) Use foil, 3x times x = 3x times 3 = 1 times x = 1 times 3 = Find the products and them combine the like terms.

OpenStudy (anonymous):

(3x+1) (x+3)

OpenStudy (anonymous):

hold on I'm going to explain it

OpenStudy (shamil98):

I've already explained it.

OpenStudy (shamil98):

...

OpenStudy (anonymous):

Oh okay, sorry

OpenStudy (anonymous):

@christianfilms11 do you understand?

OpenStudy (anonymous):

not really lol

OpenStudy (anonymous):

Kay, what part you don't get?

OpenStudy (anonymous):

can you try to explain how to do FOIL with C?

OpenStudy (anonymous):

@shamil98 how did you get 10 using foil? can you please explain? I'm stuck.

OpenStudy (shamil98):

(3x + 1)(x + 3) 3x^2 (3x times x) 3x times 3 = 9x 1(x) = x 1(3) = 3 add those together 3x^2 + 9x + x + 3 3x^2 + 10x + 3

OpenStudy (anonymous):

3x^2 +10x+3...it would be Multiply 3x by x, then multiply 1 by x and 1 by 3, then combine like terms...being 9x and x. therfore you get 3x^2+10x+3

OpenStudy (anonymous):

@christianfilms11 does that help?

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