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3 years ago

X^2 -2x -1 = 0 Pls help...show work and the answer

Mathematics

1 answer:

stepladder [879]3 years ago

3 0

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

Solve for $x$ :

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

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