So I've been self studying algebra 2 along with reading calculus for dummies lol, and I've recently taught myself completing the square as well as the quadratic formula, but this particular problem wants me to give two decimal answers I can't seem to find myself at.

3j2 + 8j – 2 = 0.

The explanation of the problem leaves off at:^ I GOT THAT, but then I simplify the square root of 88 and end up getting: j = -8 + or - 2 * SQUAREROOTOF 22 /6 <---- THAT would be what everything I've learned has taught me to leave off at

j=

-8 + 88 6 or

j=

-8 – 88 6

BUT, the site that gives me the quadratic equation states the answer as: j = 0.23 or j = -2.90, (Rounded to the nearest hundredth)

HOW!!?? Thanks

ALSO, MY APOLOGIES, the square root symbol won't show for some reason.. there should be square roots over both 88's..