# 3root98-root405+root500-root72?

##### 2 Answers

#### Explanation:

(I take "3root" to mean 3 times the square root, i.e.

We need to factorise this expression to see if there are any common factors here. We notice that:

Therefore:

Move the square numbers outside and take the square root of each:

Rearrange so that roots that belong together, come together: