Nikki 16 student, senior

3) squareroot of x² + 10x + 25

4) sixthroot of (m + 4)⁶

5) cuberoot of -64r⁶w¹⁵

6) squareroot of 49m²t⁸

13) cuberoot of (2x + 1)³

14) fifthroot of -32x⁵y¹⁰

15) - squareroot of 144m⁸n⁶

16) cuberoot of -49a¹⁰b¹⁶

17) fifthroot of 243x¹⁰

18) - squareroot of 49a¹⁰b¹⁶

19) fourthroot of (x - 5)⁸

20) cuberoot of 343d⁶

I really need to know if I have the right answers for these could you please tell me how they are done and what you come up with. Thanks.

3) First factor it and you should see something like problem 13).

13) (2x + 1)³ is (2x + 1)(2x + 1)(2x + 1) and thus its cube root is (2x + 1).

14) Here you need to see that -32 = (-2)⁵ and that y¹⁰ = (y²)⁵. Thus