How do you solve 5 =sqrt(1- 8x)?

Mar 6, 2018

$x = - 3$

Explanation:

1. You square both sides to get $25 = 1 - 8 x$
2. You subtract $1$ from both sides to get $24 = - 8 x$
3. Just divide both sides by $8$ to get $x = - 3$

$5 = \sqrt{1 - 8 x}$

So

$25 = 1 - 8 x$

$24 = - 8 x$

$3 = - x$

$x = - 3$