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February 28, 2015

February 28, 2015

Posted by **Brittany** on Saturday, April 2, 2011 at 7:04pm.

1. Simplify 2e^2+9e+3+3e^2-5e-2.

A. 5e^2+4e+1

B. -e^2+4e+5

C. 5e^2+14e+1

D. -e^2+14e+5

My answer was A. 5e^2+4e+1

2. Find the degree of 1+2x^4+2x^2

A. 4

B. 3

C. 1

D. 2

My answer was A. 4.

3. Find the degree of 7x+2

A. 4

B. 3

C. 2

D. 1

My answer was D. 1.

4. Write the variable expression. It is 4 black squares,4 skinny white rectangles, and 19 little white squares.

A. 4x^2+4x+19

B. 4x^2-4x-19

C. -4x^2-4x+19

D. -4x^2+4x+19

My answer was D. -4x^2+4x+19

5. Simplify 4q^2-5q-1-8q^2+8q-9

A. -4q^2+3q+8

B. 12q^2+3q-10

C. -12q^2-13q-10

D. -4q^2-13q+8

My answer was B. 12q^2+3q-10

6. Subtract (7x-5y) - (2x+4y)

A. 9x-9y

B. 9x-y

C. 5x-9y

D. x-y

My answer was C. 5x-9y

7. Add (6x+2y) + (3x-4y)

A. 3x-2y

B. 3x+6y

C. 9x-2y

D. 9x-2y

My answer was C. 9x-2y

8. Add (-4x-2y) + (7x-5y)

A. 11x+3y

B. 11x-7y

C. -3x+3y

D. -3x-7y

My answer was B. 11x-7y

9. Subtract (-4x^5 -5x) - (7x-5-8x^5)

A. 4x^5 -12x+5

B. -12x^5+12x+5

C. -11x^5 -13x-5

D. -13x^5 +2x-5

My answer was A. 4x^5 -12x+5

10. Subtract (4x+2y) - (8x-3y)

A. -4x-y

B. 12x-y

C. 12x+5y

D. -4x+5y

My answer was D. -4x+5y

11. Simplify 5x^4(7x+5)

A. 35x^4+5

B. 12x^5+25x^4

C. 12x^2+10x

D. 35x^5+25x^4

My answer was 35x^5+25x^4

12. What multiplication expression is shown by the model? It has two columns down, 2 big squares down and three below that. So its 10 squares all together.

A. 2x(2x+3)

B. 3x(2x+3)

C. x(x+6)

D. (x+3)(x+2)

My answer was A. 2x(2x+3). This one

I am 100% sure on, but still.

13. Simplify x^6 times x^4

A. x^10

B. x^24

C. 2x^24

D. 2x^10

My answer was A. x^10

14. Simplify -4x(2x^4+2)

A. -8x^4-2

B. -2x^5+8x

C. -2^4-6x

D. -8x^5-8x

My answer was D. -8x^5-8x

15. Find the area of the figure. The length is 4x^2+2x and the width is 3x.

A. 7x^3+5x^2

B. 4x^2+5x

C.10x^2

D. 12x^3+6x^2

My answer was D. 12x^3+6x^2

- Urgent Math please check -
**PsyDAG**, Sunday, April 3, 2011 at 11:24am1, 2, 3. Correct

Don't know about 4.

5. It seems like you might have a typo. I get

-4q^2+3q-10

6, 7. Correct

8. Typo? I get 3x-7y.

9, 10, 11. Correct

12. Don't have model.

13, 14, 15. Correct.

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