[Am14]

Does anyone know the answers to the following questions? Any explanation about why those are the answers will be helpful too. Thanks.

1. 3*3*3*3 = 34

True False

2. 23 = 2 + 2 + 2

True False

3. 2x3 = (2x)3

True False

4. (-2)4 = 16

True False

5. 3x -2 is a binomial

True False

6. The numerical coefficient of the monomial -4x3 is 3

True False

7. 4x2y and 4xy2 are like terms

True False

8. The degree of the polynomial 3x4 + 4x3 - 3x4 + 5x + 1 is 3

True False

9. (2c)(3c) = 6c

True False

10. x3 + x3 = x6

True False

11. x3*x3 = x6

True False

12. x*x4 = x5

True False

13. (2x2)3 = 8x5

True False

14. 3(-2x2)3 = -24x6

True False

15. Xy2 = (xy)2

True False

16. (am)n = amn

True False

17. Am * bm = (ab)m

True False

Part 2

Multiple Choice: Simplify or evaluate the statements. (Each question is worth 1 point)

18. Write in exponential form: -3*x*x*x*x

3x4 4x-3
-3x4

19. Write in exponential form: (2y)(2y)(2y)

8y3 6y3
24y

20. Write in exponential form: (-2z)(-2z)(-2z)(-2z)

-16z4 16z4
-8z3

21. 3 + 24/8 - 5

2 0
-2

22. If x = -1 and y = 2, find the value of: 2x3y - (xy)2

-8 8
6

23. 3a - 4b + 4a + 3b

7a - b a + b
a - b

24. (5x + 3y) + (8x - 7y)

3x + 10y 13x - 4y
4x - 13y

25. (3a2 - 4b) - (5a2 - 3b)

8a2 - 7b -a2 + b
-2a2 - b

26. Solve: 5x - (2x - 3) = 21

x = 8 x = 6
x = 4

27. (3x2y4)(2xy2)(-4y)

-24x3y7 24x3y7
-12x3y7

28. 3(x) * 3(x + 1) * 3(2 - x)

27x3 3(3x + 3)
3(x + 3)

29. (5y6)(3y) - (y4)(8y3)

7y7 23y7
-3y7

30. [ (1/2)x2y3 ]4 (1/16)x8y12 (1/8)x6y9
16x8y12

31. (3a2)(2a3)2

6a8 12a8
12a12

32. Which of the following is NOT true? 2(x - 3) = 2x - 6
-x(x - 3) = 3x - x2
(x + 1)x = x2 + 1

33. (1/3)(xy2)(9x2y - 12xy2 + 6)

3x3y3 + 4x2y4 + 2xy2 3x3y3 - 4x2y4 + 2xy2
9x3y3 - 12x2y4 + 6xy2

34. 3a(6a - 2b) + 2b(2a - 1)

18a2 - 2ab - 2b 18a2 - 10ab - 2b
6a2 + 2ab - 2b

35. Solve: 2x(3x - 4) = 3x(2x + 1) - 11

x = 1 x = -1
x = 2

[Capuchin]

Howabout you say what you think the answers are, and we'll give you pointers if you get any wrong? :)

[Am14]

Thanks for nothing.