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saifoo.khan
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quadratic equation.

saifoo.khan
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u want factors or value of x?

HannahJ
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factors

johnthomasappling
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Yes, use the quadratic equation.

Alexis1994_13
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Again that. How we can use quadratic equation ???
He don't says 9x^2+9x28=0! he just says 9x^2+9x28!
This is nothing guys!

HannahJ
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thats what the problem is!

johnthomasappling
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It should be set to 0, you are correct.

Alexis1994_13
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the better thing that you can do is this: 9x(x9)28.

Alexis1994_13
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*** 9x(x+1)28

Dana400
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how will that help us?

Alexis1994_13
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You can't do anything else,only factorization.

Dana400
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Oh, I see! I thought it's finding x. Sorry, my bad >_<
Thanks Alexis =)

Harkirat
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9x^2 + 9x  28 (ac = 9*28 = 252)
9x^2 + 21x  12x  28
3x(3x + 7) 4(3x + 7)
(3x  4)(3x + 7)

HannahJ
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THANK YOU!!!

Harkirat
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u r welcome.....☺☻☺

HannahJ
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:) can you help me with some more?