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Post by ssquiffy on Oct 6, 2016 10:14:02 GMT -5
when working with polynomials, how exactly would you check your answers (assuming thats possible)? i dont recall my teacher ever mentioning anything about it and since the only way i ever get good marks in math is triple checking everything for mistakes, well... lets just say that i didnt do too well this time around (i didnt fail, so thats something) sorry if this is a stupid question owo i dont really want to fail horribly everytime i work with polynomials
also, how the hell do people open their lockers so quickly?? edit: nvm i think i got it im just stupid but how do people open their lockers so quickly though?????
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Post by qυeeɴ oғ ɢнoѕтlιɴɢѕ on Oct 6, 2016 10:23:38 GMT -5
I feel like I need an example to help I forget what those are but I recognize problems sometimes
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Post by Darkshine Laufeyson-Barnes on Oct 6, 2016 10:41:09 GMT -5
OMG, I have a test next week that will determine if I get a free year of college, and it has polynomials. I think this is how to do it?
Here is a simple one.
x^2 +6+9 If you factor that, you have (x+3) and (x+3). To check it, you have to make sure that +3 and +3 add up to the middle term of the polynomial, and if you multiply them, you get positive 9. 3+3=6 3*3=9. And then you have 2 x's, so that would be x^2.
Do you want me to explain a more complicated one?
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Holly Snow
My full names are Hollyleaf;) and Snowwing™
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Post by Holly Snow on Oct 6, 2016 10:45:09 GMT -5
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Post by Deleted on Oct 6, 2016 11:11:57 GMT -5
it takes me 10 seconds to open my locker. just memorize ur code and let ur fingers do the work.
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Post by Basement Cat on Oct 6, 2016 11:28:18 GMT -5
So you are working with factors. You can always use the FOIL method to recheck your answers.
Let's say you end up with the following answers:
x+6 or 2x-3
To check that you can see that:
x * 2x = 2x2
x * -3 = -3x
2x * 6 = 12x
6 * -3 = -18
(-3x and 12x equal up to 9x)
and so you can see it ends up being correct as 2x2 + 9x - 18.
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Post by UB₀₁: 𝚂𝚢𝚖𝚋𝚒𝚘𝚗𝚝. on Oct 6, 2016 11:30:57 GMT -5
for the locker question, does your locker have a spinny dial? There's a way of jamming something into the lock so that it's always unlocked, you just have to pull open the door however messing with the lock, even of your own locker, might get you in trouble EDIT: found a wikihow for rigging lockers, if you're willing to risk reprimands and possible detention for repeated use www.wikihow.com/Rig-a-Locker
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Post by Deleted on Oct 6, 2016 13:34:42 GMT -5
for lockers, if you have a dial then if you close it gently enough the lock won't spin out of place and you can just lift to open it every time. it doesn't automatically reset when you close it, at least in my school
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