factor perfect square trinomial
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Uploader Comments (robichaudd)
Top Comments
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i'm gonna fail algebra
1 year ago 29
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wow, my teacher was having me do something much more complicated...thank you so much... my brain loves you!
11 months ago 3
All Comments (81)
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Waaaaiiit is this like a shortcut? In my text book its soooo much longer how to find it out o.o lol....
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i hate math
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Oh NVM. I get it now. Not a perfect square
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I get it now thanks. just not this one problem: 25x2 - 15xy + 36y2 (x and y are variables and the 2s are exponents) O.o
I suck. Oh and im in 7th grade
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makes a lot more sense than 2a^2+2ab+b^2.
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im going to suck at algeabra too.... smh
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@robichaudd I just got new wireless logitech headsets a hour ago... and I completely understand it now thanks alot! subbed and liked!
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@robichaudd Oh.. sorry mate and thanks! :DD
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2:43 why did you put that line with 5 above it? what does it mean? (I dont have headsets so I cant hear you)
sonnytenedo 2 months ago
@sonnytenedo That was a square root symbol, not a 5. So the point I was making there was that if you take the square root of the first term and the last term, and then keep the sign from the middle term, you'll usually end up with the correct factoring. For example, using that approach to factor 4x^2-12x+9 we get (2x-3)(2x-3), or (2x-3)^2. If that approach did not give the correct factoring, then we'd have to try a different method.
robichaudd 2 months ago
i get it but~ how about if the middle term is negative? ^^, thanks
feiziyulin 6 months ago
@feiziyulin In the factoring, keep the sign of the middle term from the trinomial. For example, x^2-6x+9 factors to (x-3)^2.
robichaudd 6 months ago