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How do you solve $9x^2+6x+1=0$ using completing the square?

1 Answer

Jun 14, 2015

Recognizing that $9x^2+6x+1$ we get $x= -1/3$

Explanation:

$9x^2+6x+1 = 0$
is equivalent to:
$color(white)("XXXX")$ $(3x+1)^2 = 0$
$rArr$
$color(white)("XXXX")$ $3x+1 = 0$
$rArr$
$color(white)("XXXX")$ $x = -1/3$

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