Brightstorm is like having a personal tutor for every subject

See what all the buzz is about

Check it out
Don't Stop Learning Now!

Gain access to 3,500 HD videos.

Convince me!

Watch 1 minute preview of this video


Get Immediate Access with 1 week FREE trial
Your video will begin after this quick intro to Brightstorm.

The Quadratic Formula - Problem 4 281 views

Many students think of decimals as exact. More decimal places is even more exact. BUT, this is actually not the case. When the solution to a math problem is irrational, meaning a non-terminating, non-repeating decimal, and you "round to the nearest tenths or hundredths," you are actually making the solution less precise. The most exact answer is always either a fraction, if possible, or a simplified radical. Here we look at an example of decimal approximations versus simple radical form in the context of solving a quadratic equation.

Transcript Coming Soon!