Answer: -2√10
Step-by-step explanation:
-1√10 - 1√10 = -2√10.
Since they are like terms, you'd simply just collect the two together. Think of it as just doing -1 - 1 = -2 and adding the radical behind the two.
You'd also leave it as √10 because you're unable to break it down or simplify it further than that.
Hope I was able to help you out.
