lizdils lizdils

06-12-2016
Mathematics

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Let f(x)=x^2-4x+1. write f(x) in standard form

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nobrains nobrains

06-12-2016

[tex]y = x^2 - 4x + 1[/tex]

The method to change it to the form [tex]y = a(x-h)^2+k[/tex] is to complete the square.
[tex]y=x^2-4x+1 \\ y-1 = x^2-4x \\ y-1+4 = x^2-4x+4 \\ y+3=(x-2)^2 \\ y=(x-2)^2-3[/tex]

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