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Mathematics 19 Online
OpenStudy (babynini):

Please help me solve this step-by-step! Factor: 20v^2+13v-15

OpenStudy (anonymous):

is this factoring?

OpenStudy (babynini):

Yup!

OpenStudy (anonymous):

okay then i can help you :)

OpenStudy (anonymous):

as soon as dad leaves xD

OpenStudy (anonymous):

i cant focus unless im alone

OpenStudy (babynini):

Lol xD I gotcha, it's all good!

OpenStudy (anonymous):

okay hes gone

OpenStudy (anonymous):

ok first before you can even start factoring you need to find the GCF or greatest common factor of the numbers. do you see one?

OpenStudy (anonymous):

\[20v ^{2}+13v-15\]

OpenStudy (anonymous):

youre going to want to make a diamond chart (This is the easiest way to do factoring in my oppinion c:)

OpenStudy (anonymous):

for the top number you multiply a and c. a being20 and c being 15, so that comes out to be 300. then the bottom number is going to be B which is 13.

OpenStudy (babynini):

hm, well the format I'm meant to answer in should look something like \[20v^2+13v-15\] = \[(?v +/- ?)(?v =/-?)\]

OpenStudy (anonymous):

oh actually to be honest i cant remember how to do this... im sorry :/ I thought i knew how but i forgot it haha

OpenStudy (babynini):

Aw, okay. Well thank you anyway! :)

OpenStudy (babynini):

It's "foil" format. (Have you heard of it?) Would it help if I gave an example of one that i've solved that way there's not random question marks all over? :P

OpenStudy (anonymous):

oh! yes. Please give an example :)

OpenStudy (babynini):

Factor trinominal: \[w^2+15w+56\] Answer: (w+8)(w+7)

OpenStudy (babynini):

Or Multiply: (x-6)(x-9) Answer: \[x^2-15x+54\]

OpenStudy (anonymous):

yeah i know how to do that but not if the first number is greater than one

OpenStudy (anonymous):

OH nevermind!!

OpenStudy (anonymous):

you have to find the equation that would equal that equation?

OpenStudy (babynini):

Let me find an example like that one :)

OpenStudy (anonymous):

nooo its ok! i know what to do now!

OpenStudy (babynini):

Ah, ok. Fantastic ^-^

OpenStudy (anonymous):

ok so 20 is a, 13 is b and 15 is c right? :)

OpenStudy (anonymous):

so youre gonna make a lil box (il draw it for u!)

OpenStudy (anonymous):

|dw:1427763234642:dw|

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