#Discriminants

60 messages · Page 1 of 1 (latest)

junior field
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b^2-4ac=0

scarlet jay
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yes

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but

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the brackets are confusing me and like

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the b expansion

junior field
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a=3
b=-3k-2

scarlet jay
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wait

junior field
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c=3

scarlet jay
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it isnt -3kx -2x

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x+3 is the c coefficient?

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i mean c

junior field
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no

scarlet jay
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ignore coefficient

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no to what

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then what happens to the x

junior field
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it's the coefficient of b is -(3k+2)

scarlet jay
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...

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i dont get what you mean

junior field
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look at a

scarlet jay
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a is 3

junior field
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why

scarlet jay
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because it is infornt of the x^2

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OMDS

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IM SO STUPID

junior field
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apply the same logic to the x

scarlet jay
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Ok got it

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mb

junior field
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there you go

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so we establish that -(3k+2) = -3k-2

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yes?

scarlet jay
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yes

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that is the expansion

junior field
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so now, use the discriminant and substitute your a, b and c values into it

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and because we have equal roots, the discriminant must be = to 0

scarlet jay
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ok after simplifying everything i got

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9k^2+12k-32=0

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so i factorise that

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to solve for k

junior field
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you could take a factor of 3 out

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make it a bit easier for you

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wait can you

scarlet jay
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3 doesnt go into 32

junior field
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,w -32/3

carmine wolfBOT
junior field
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lmao anyways

scarlet jay
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its aight i got a level cal on me

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ill shove it in ther

junior field
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yeah

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I would too

scarlet jay
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4/3 and -8/3

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yep correct

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ty

junior field
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,w solve 3x^2-(3k+2)x+3

carmine wolfBOT
junior field
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LMAO okay wolfram

junior field
scarlet jay
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tf is all that...

junior field
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wolfram being an idiot

scarlet jay
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i see i see

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have a nice day