Okie, when you are talking about area, you will have units of course! :-)
So, square units are the units in which describe the area. Let's take a rectangle slab of paper that is 2 inches by 4 inches. Yes, the answer is 8, but what are the units. It is inches squared! Squared units are the units of area.
I hope this helps :-)
you can write it like: four hundred twenty nine
and you can write it in expanded form: 400+20+9
hope that helps :)
Remember that only roots with same roots you can combine.
Split 12 into 2 numbers that either one will be 3 so that you can combine the roots.
12 is the same as 4 × 3.
Root of 4 is 2 so you can take it out of the root as 2.
So the answer will be => -12(2)√3-2√3 = -22√3
Hope this helps!