Download Review 2-5, 2-9

Algebra 2 CP
Simplify. (2.5)
1.
 98 = _______
Review Sheet 2.5, 2.9
2.
 48 = _______
3.
Name
 64 = _______
Solve by taking the square root. (2.5)
5. 6x² + 150 = 0
6. (x – 5)² + 12 = 0
7. (x + 1)2 = -64
8. 3(x + 2)2 + 29 = 8
Find the zeros of the function by completing the square. (2.5)
9. f(x) = x2 – 4x + 20
10. g(x) = x2 + 6x + 17
11. f(x) = x² + 12x + 45
12. g(x) = x² - 22x + 133
Find the zeros of the function by using the quadratic formula. (2.5)
13. h(x) = x2 + 6x + 45
14. f(x) = -3x2 + 4x – 4
15. g(x) = x² + 3x + 3
16. h(x) = 2x² - 10x + 18
4.
 72 = ______
Find the complex conjugate of each complex number. (2.5)
17. 7 – 4i ____________
18. -5 + 6i ____________
19. 10i ____________
Write each expression as a complex number in standard form. (2.9)
20. (6 – 3i) + (5 + 4i)
21. (-2 – 6i) – (4 – 6i)
23. (8 + 20i) – (-8 + 12i)
24. 6i(3 + 2i)
27.
7i
8i
28.
22. (9 + 8i) + (8 – 9i)
25. (4 – 3i)2
4  9i
12i
29.
26. (-2 + 5i)(-1 + 4i)
7  4i
2  3i
Plot the complex numbers in the complex plane. (2.9)
30. 1 + 2i
31. -6i
32. -7 – i
33. 7
Find the absolute value of each complex number. (2.9)
34. 4 + 3i
35. 10 – 5i
36. -8i
*****Turn to p. 139 and complete problems 78 – 95 as well.
37. -4 + i