Week 4 – Multiplying and Dividing Radicals

This week in pre-calculus 11, we learned about multiplying and dividing radicals. At first, I did not understand how to divide radicals because it wasn’t as straight forward as multiplying, but then we learned that it is very simple for how complicated it looks. For example:

If we take the expression below and try to simplify it, the steps we learned in class will look like this.

\frac{5\sqrt8-3\sqrt2}{\sqrt32+3\sqrt2}

 

\frac{10\sqrt2-3\sqrt2}{4\sqrt2+3\sqrt2}

 

\frac{7\sqrt2}{7\sqrt2}

 

=1

However, in other equations, you might have to multiply the top and bottom of the fraction by the denominator.

Thanks for listening to what I learned in pre-calculus 11 this week!

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