Question

What’s 7 and what’s 9?

Answer 1

7 is A

Explanation:

50 can be turned into 2 and 25 and you can simplify 25 into 5 giving you 5 to the square root of 2

Answer 2

7. A- 5√2

9. C- 6√2

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!