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# Radicals (Part 3) (Complex Numbers - Imaginary Numbers "$i$")

1. 1
Simplify: $$\sqrt{-16}$$
2. 2
Simplify: $$\sqrt{-9}$$
3. 3
Simplify: $$\sqrt{-29}$$
4. 4
Simplify: $$\sqrt{-125}$$
5. 5
Simplify: $$\sqrt{-40}$$
6. 6
Simplify: $$5-\sqrt{-20}$$
7. 7
Simplify: $$9+\sqrt{-90}$$
8. 8
Simplify: $$17-\sqrt{-52}$$
9. 9
Evaluate: $$4i\times\text5i$$
10. 10
Evaluate: $$(-7i)\times3i$$
11. 11
Evaluate: $$(-5i)\times8i$$
12. 12
Simplify $$i^4=$$  $$i^7=$$
13. 13
Simplify $$i^{34}=$$  $$i^{35}=$$  $$i^{36}=$$  $$i^{37}=$$
14. 14
Simplify: $$(3i\sqrt{5})^2$$
15. 15
Simplify: $$(i^6)(2i)^3$$
16. 16
Simplify $$(2-5i)(3+4i)$$
17. 17
Simplify $$(3+2i)^2$$
18. 18
Simplify $$2i(5i^2-3i+2)$$
19. 19
Simplify: $$(3i\sqrt{5})(2i\sqrt{5})$$
20. 20
Simplify: $$(-3i\sqrt{2})(4i\sqrt{2})$$
21. 21
Simplify: $$\frac{15+20i\sqrt{2}}{10}$$
22. 22
Simplify: $$\frac{8-\sqrt{-16}}{4}$$
23. 23
Simplify: $$\frac{6+\sqrt{-27}}{9}$$

$$e=mc^2$$