#quadratic equations
shrewd cargoBOT
foggy condor
do you know about the quadratic formula?
violet valley
yes, the ABC formula
And I solved a few with them. Howeverm this the first time facing an answer with fractions.
foggy condor
what do you get?
foggy condor
the formula used here is x = [-b+-sqrt(b²-4ac)]/2a
and the answers match
just split the denominator
@violet valley ?
foggy condor
you just used completing the square to explain the whole thing
rapid cypress
meager timber
you just used completing the square to explain the whole thing
ª
I guess maths has various ways
rapid cypress
many students are familiar with this quadratic formula...
foggy condor
it sure has
rapid cypress
easy-peesy question tho
foggy condor
you, i also thought what went wrong with this
everything was fine....but he had some problems on chugging the values ig
meager timber
i guess that people just use this formula as the formula it is and get the values as decimal numbers, probs just substutute w calculator
its not strange that those same question how did someone get a fraction or smthn
meager timber
wat?
rapid cypress
like represent the answer like 12345.6789 in this format
meager timber
ª
idk how it has to be represented, pretty sure it doesnt really matter as long as you solve it
OH
I JUSt understtod the question
srry
meager timber
you gotta give an integral answer!?
its not really mandatory
but since students here use calculator to get this, they copy whatever number they get and thats it
foggy condor
the person had doubts on how the answer came out to be this
foggy condor
you just do not wanna get decimal answers with the formula, it becomes a mess
violet valley
Oh wow sorry guys, i'm just back. Was eating.
I will take a look rn, still didn't solve it.
meager timber
you just do not wanna get decimal answers with the formula, it becomes a mess
waaaat?, my classmates surely dont think like that
rapid cypress
you just do not wanna get decimal answers with the formula, it becomes a mess
big brain process Fr
foggy condor
it just looks neat in fractions, unless you actually want rounded decimal answers
meager timber
cause most cases the values would be infinite decimal numbers
foggy condor
if you know how the formula was derived, it is more fun
rapid cypress
but thats why I hated the formula
bro, we have a hell lotta formula in our daily life....
violet valley
the formula used here is x = [-b+-sqrt(b²-4ac)]/2a
That's true, exact same formula I've used.
foggy condor
then how did you not get that answer
meager timber
That's true, exact same formula I've used.
welp, then you just leave the sqrt(17) as that
and magic
violet valley
Let me read the conversation between you. I suck at math im so sorry.
meager timber
Let me read the conversation between you. I suck at math im so sorry.
dw, take your time
rapid cypress
bro its 4x2x(-1)
violet valley
I know it’s very wrong, but yeah. Gonna read and trying to understand.
rapid cypress
please check again
violet valley
Yes sorry xD
rapid cypress
and in the formula its -b not b^2
rapid cypress
check this for reference of formula
rapid cypress
ye
violet valley
Hold on, gonna recalculate it
rapid cypress
ig you confused discriminant formula with the quadratic formula
violet valley
This is what I’ve done out of my head
ebon oar
This is what I’ve done out of my head
yes this is correct
foggy condor
This is what I’ve done out of my head
now this is correct
violet valley
But honestly, idk how to solve it rn
rapid cypress
it is merely formula substitution thats it
foggy condor
just split the /4 to both the terms on the numerator
rapid cypress
it doesnt really matter cuz the answer is same
violet valley
Can I ask which answers you (both) got?
foggy condor
yeah, but if he wants the answeer to look the same
violet valley
My theorybook says for x1 = - 3/4 + 1/4 = sqrt(17)
And
rapid cypress
what?/
violet valley
x2 = = - 3/4 - 1/4 = sqrt(17)
rapid cypress
is it really equal?
foggy condor
from where does that extra equal sign comes
rapid cypress
no it is not
violet valley
violet valley
But how did they get that 1/4? Like the - 3/4 and sqrt(17) is clever.
rapid cypress
there is no difference in write a denominator for the whole answer and splitting it for each term of the answer
ebon oar
But how did they get that 1/4? Like the - 3/4 and sqrt(17) is clever.
-3/4 + sqrt(17)/4 is the same with (-3 + sqrt(17) ) / 4
meager timber
bro its 4x2x(-1)
silly mistake
meager timber
But how did they get that 1/4? Like the - 3/4 and sqrt(17) is clever.
I literally sent a photo with a possible method that could lead to that directly lmao
but whatever, its what they telling you, just split or not the denominator
foggy condor
@violet valley if your problem is solved, you might wanna close
shrewd cargoBOT
Solved