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Mathematics 13 Online
OpenStudy (anonymous):

factor the trinomial 7x^2+34x-5

OpenStudy (anonymous):

multiples of 7: (1,7) (-1,-7) multiples of 5: (1,5) (-1,-5) choose which ones +34? are you sure its 34x?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

factors of 35

OpenStudy (anonymous):

okay then use the quadratic formula\[\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]

OpenStudy (anonymous):

I think I got it (x+5)(7x-1)

OpenStudy (anonymous):

then it should be 35x

OpenStudy (cwrw238):

7 and 1 5 and 1 jmack07 is right

OpenStudy (anonymous):

quadratic formula wont be used in this, factor by grouping

OpenStudy (anonymous):

OK its coming slowly still a few more that I am working on

OpenStudy (anonymous):

@nickhouraney i have used the formula to factor

OpenStudy (anonymous):

why

OpenStudy (anonymous):

because i can.. and the answer commons out fine.. let me give you link

OpenStudy (anonymous):

usually using the quadratic formula is only if you cant factor it

OpenStudy (anonymous):

well, that's what am comfortable with

OpenStudy (anonymous):

that example is a different type of problem

OpenStudy (anonymous):

its the same, we used roots to find factors..

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