Let’s solve each problem step by step. These are all about
adding or subtracting square roots — but you can only combine terms if they have the
same radical part (like √6, √3, etc.). If the radicals are different, you leave them as is.
---
Problem 1:
-5√6 - 2√6
Same radical? Yes → both are √6
Combine coefficients: -5 - 2 = -7
→
-7√6
---
Problem 2:
-3√5 + 2√5
Same radical? Yes → both are √5
Combine: -3 + 2 = -1
→
-√5
---
Problem 3:
-4√3 + 3√3
Same radical? Yes → √3
Combine: -4 + 3 = -1
→
-√3
---
Problem 4:
-3√6 - 4√6
Same radical? Yes → √6
Combine: -3 - 4 = -7
→
-7√6
---
Problem 5:
-4√10 + 5√10
Same radical? Yes → √10
Combine: -4 + 5 = 1
→
√10
---
Problem 6:
-√6 - 2√6
Think of -√6 as -1√6
So: -1 - 2 = -3
→
-3√6
---
Problem 7:
-√7 - 5√7
Again, -√7 = -1√7
-1 - 5 = -6
→
-6√7
---
Problem 8:
-√10 - 5√10
-1 - 5 = -6
→
-6√10
---
Problem 9:
-3√24 - 3√2 + 2√2
First, simplify √24:
√24 = √(4×6) = 4 × √6 = 2√6
So: -3√24 = -3 × 2√6 =
-6√6
Now look at the rest: -3√2 + 2√2 → same radical → (-3 + 2)√2 =
-√2
So overall:
-6√6 - √2
*(Can’t combine further — different radicals)*
---
Problem 10:
-3√45 - √5 + 2√2
Simplify √45:
√45 = √(9×5) = √9 × 5 = 3√5
So: -3√45 = -3 × 3√5 =
-9√5
Now expression becomes:
-9√5 - √5 + 2√2
Combine like terms: -9√5 - √5 = -10√5
Then add 2√2 → can’t combine with √5
Final:
-10√5 + 2√2
---
## Final Answer:
1) -7√6
2) -√5
3) -√3
4) -7√6
5) √10
6) -3√6
7) -6√7
8) -6√10
9) -6√6 - √2
10) -10√5 + 2√2
Parent Tip: Review the logic above to help your child master the concept of adding square roots worksheet.