Question

$9x^2-1=0$

Solution

VerifiedStep 1

1 of 2We are given:

$9x^2-1=0$

Add 1 to both sides:

$9x^2=1$

Divide both sides by 9:

$x^2=\dfrac{1}{9}$

Use the square root property: If $x^2=a$, then $x=\pm \sqrt{a}$

$x=\pm\sqrt{\dfrac{1}{9}}$

$\color{#c34632}x=\pm\dfrac{1}{3}\color{white}\tag{1}$

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