simultaneous equations | Revision Server | Page 1

junior flint Oct 30, 2022, 5:16 PM

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daring plume Oct 30, 2022, 5:17 PM

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solve simultaniously then set discriminant to 0

junior flint Oct 30, 2022, 5:19 PM

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yh the solving simultaneously is what i cant do

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wait do i solve it in terms of kx

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then use discriminant

daring plume Oct 30, 2022, 5:20 PM

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so from the second equation y = 1 + kx/2 then sub that into the first one

junior flint Oct 30, 2022, 5:20 PM

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yeah i done that bit

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now idk

daring plume Oct 30, 2022, 5:20 PM

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then get it in the form ax^2 + bx + c = 0

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then do b^2 - 4ac = 0

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and solve that

junior flint Oct 30, 2022, 5:21 PM

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oh i think i got it

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wait this is dumb but

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if i have - x (1+x) would i multiply terms in the braquet by minus x or posotive x then just subtract what i get

junior flint Oct 30, 2022, 5:22 PM

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@daring plume

daring plume Oct 30, 2022, 5:22 PM

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do -x

#simultaneous equations