Forgot everything from last class? No worries! Watch the 3 min video above to see examples similar to #1-6.

Simplify:

Simplify:

Evaluate:

Evaluate:

Simplify:

Multiply:

_{Write your answer as a reduced fraction!}

Multiply:

_{Write your answer as a reduced fraction!}

What is the exponent on this number: 7

_{Hint: it's invisible!}

So we can say... x^{\frac{1}{2}}=\sqrt{x}​

But why?? Let's recall the definition of square root:

If we look REALLY CLOSE at the \sqrt{x} we'll start to see its invisible numbers...

Not only does it have an invisible exponent of 1 but there's also a 2 in the corner of the radical!

Using this pattern, select the true equation below.

_{Hint: use the cube root symbol in your calculator to evaluate.}

Check out the difference between the examples below:

*It will always be easier to evaluate the radical first, then the exponent at the end.

Now you try:

Now you try!

_{No decimals!}

_{No decimals!}

Hint: Think (?)^ 4=81

Or to use your calculator, type 4 -> MATH -> 5: \sqrt[x]{}