Answer:
7. A- 5√2
9. C- 6√2
Step-by-step explanation:
Let's begin with question 7 asking to simplify √50.
We need to ask ourselves the question if 50 has a factor that is a square. It does!
We can break √50 into √25·2. Since 25 is a square, we can take it out of the radical by taking out its square root like this:
5√2.
For question 9, we can simply do the same exact process. √72 can be broken into a factor that is a perfect square as well!
√72 --> √36·2
Now, take the square root of 36 out of the radical to become:
6√2
Here are your answers!
