help for week 3 assignment

1.

Add. (9a3 + 3a2) + (5a3 + 6a2)

A) 14a6 + 9a4 B) 23a5 C) 14a3 + 9a2 D) 23a10

2.

Add. (-9 + 3n6 + 3n5) + (2n6 + 5n5 + 6)

A) 5n6 + 8n5 - 3 B) 10n11 C) 5 + 8n6 - 3n5 D) -7n6 + 8n5 + 9

3.

Add. (9 + 8x2 + 9x4 - 7x3) + (-2x3 + 2x2 + 2 + 5x4)

A) 14x4 - 9x3 + 10x2 + 11 B) 7x4 + 7x3 + 11x2 - 2 C) 15x18 + 11 D) 14x8 - 9x6 + 10x4 + 11

4.

Subtract. (-8a3 - 14a2) - (-14a3 - 18a2)

A) 6a3 - 32a2 B) -22a3 - 32a2 C) 6a3 + 4a2 D) 10a5

5.

Subtract. (8n7 + 2n6 + 17) - (5n6 + 5n7 + 15)

A) 3n7 - 3n6 + 32 B) 3n7 + 7n6 + 32 C) 2n13 D) 3n7 - 3n6 + 2

6.

Perform the indicated operations. (4x2 + 5) - (2x2 - 6) + ( 4x2 - 10x)

A) 10x2 + 10x - 1 B) 6x2 - 10x + 11 C) 10x2 - 10x + 11 D) 6x2 - 10x - 1

7.

Perform the indicated operations. (5s2 - 3s) - (2s2 - 7s) + ( 5s2 - 6)

A) 8s2 + 4s - 6 B) 8s2 -10s - 6 C) 12 s2 -10s - 6 D) 12 s2 + 4s - 6

8.

Multiply. (4m2)(5m4)

A) 20m B) -20m6 C) -20m D) 20m6

9.

Multiply. 4(5x)

A) 20 B) 20x C) 9x D) 9

10.

Multiply. -12x(6x - 11)

A) 60x2 B) -72x2 + 132x C) 6x2 + 132x D) -72x2 - 11x

11.

Multiply. -8x5(11x3 + 6)

A) -136x5 B) -88x8 + 6 C) -88x8 - 48x5 D) -88x3 - 48

12.

Multiply. -8x2(-10x4 + 9x3)

A) 8x2 B) 8x6 + 8x5 C) 80x6 - 72x5 D) 80x6 + 9x3

13.

Multiply. (x + 6)(x - 6)

A) x2 - 36 B) x2 - 12x - 36 C) x2 - 12 D) x2 + 12x - 36

14.

Multiply. (2x - 7)(x - 4)

A) x2 - 15x + 50 B) x2 + 28x - 15 C) 2x2 - 15x + 28 D) 2x2 + 50x + 28

15.

Multiply. (2x + 9)(2x - 9)

A) 4x2 - 36x - 81 B) 2x2 - 36x - 81 C) 4x2 + 36x - 81 D) 4x2 - 81

16.

Factor. 4x2 + 33x + 35

A) (4x + 5)(x + 7) B) (x - 28)(x + 7) C) (x + 5)(x + 7) D) (4x - 28)(x + 7)

17.

Factor. 4x2 - 25x - 56

A) (x - 7)(x - 8) B) (x + 4)(x - 8) C) (7x + 4)(x - 8) D) (4x + 7)(x - 8)

18.

Factor. 6x2 - 53x + 40

A) (5 - 6x)(6x - 5) B) (x - 8)(6x - 5) C) (6x + 35)(6x - 5) D) (x + 8)(6x - 5)

19.

Factor. y2 - 64

A) (y + 64)(y - 64) B) (y + 8)(y - 8) C) (y2 + 8)(y2 - 8) D) (y - 8)(y - 8)

20.

Factor. x2 + 16x + 64

A) (x + 8)2 B) (x + 8)(x - 8) C) (x - 8)2 D) Prime