Square root questions?

Question

8: sqrt (18)+(32)

9: sqrt (28)-(63)

10: sqrt (8)-(50)+(12)

11: sqrt (9x)+(16x)-(25x)

12: sqrt (72)+(50)

13: sqrt (18xy)-(8xy)

14: sqrt (4a^2)+(9a^2)

15 sqrt 10(y^5)-(4y^5)

Answer 1

Stuff inside ( ) is squarerooted

8: sqrt (18)+(32)

3(2)+4(2)

7(2)

9: sqrt (28)-(63)

2(7)-3(7)

-(7)

10: sqrt (8)-(50)+(12)

2(2)-5(2)+2(3)

-3(2)+2(3)

11: sqrt (9x)+(16x)-(25x)

3(x)+4(x)-5(x)

2(x)

12: sqrt (72)+(50)

3(8)+5(2)

6(2)+5(2)

11(2)

13: sqrt (18xy)-(8xy)

3(2xy)-2(xy)

(2xy)

14: sqrt (4a^2)+(9a^2)

2a+3a

5a

15 sqrt 10(y^5)-(4y^5)

10(y^5)-2(y^5)

8(y^5)