#Completing square method yields diff solution than reg.

20 messages · Page 1 of 1 (latest)

dreamy forge
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when using the completing the square method for x^2 -6x+9, I go x=3 but if i just factor it normally I get x=-3 with the multiplicity of 2

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dreamy forge
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-3 + -3 = -6

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also the leading power is 2 so there shouldnt there be two roots

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completing the sqr gives a mult of one

digital carbon
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thus x=3

dreamy forge
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oh im a dumbass

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i forgot to put them into parentheses

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but why is it a mult of one

digital carbon
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Wdym

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it has a multiplicty of 2

dreamy forge
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how??

digital carbon
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completing the square gives us (x-3)^2 which is the same as (x-3)(x-3)

dreamy forge
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i’m dumb

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.solved