Question

Solve using square roots. Check your answers.

25 x^2 - 1 = 0

Answer 1

\[25x^2 = 1\]

\[x^2 = 1/25\]

\[x = \pm \sqrt{1/25 } = \pm 1/5\]

Answer 2

We have
\[25 x^2-1=0\]
Add 1 to both the sides
\[25 x^2=1\]
Now divide both sides by 25
\[x^2=\frac{1}{25}\]Now take root both sides, we get
\[x=\pm \frac{1}{5}\]