tanyaballas tanyaballas

06-02-2017
Mathematics

Answered

X^2 -2x -1 = 0

Pls help...show work and the answer

Verified Answer :

LammettHash LammettHash

06-02-2017

\(x^2-2x-1=x^2-2x+1-2=(x-1)^2-2=0\)

Solve for \(x\):

\((x-1)^2-2=0\)
\((x-1)^2=2\)
\(x-1=\pm\sqrt2\)
\(x=1\pm\sqrt2\)

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