Question

3. 2x^2+6x-7x+8-3x^2+1
A. 2x^2+x+9
B. -2x^2-x-9
C. -x^2-x+9
D. x^2+9

4. What are the coefficents in the polynomial 4x^2+3x-3
A. 4,-3,-3
B. 4,3
C. 4,3,3
D. -4,-3

6. (7x^2-x-2)-(6x^3+3)
A. 6x^3-+7x^2-x-5
B. -6x^3+7x^2-x+1
C. -x^3-x-5
D. x^2-x+1

7. Suppose you earn 6t-2 dollars on Monday and 9t-6 dollars on tuesday. What were your total earnings? Simplify your answer.
A. 15t-4
B. 15t+8
C. -3t-4
D. -3t+8

15. (1.4*10^1)(8*10^4)
A. 9.4*10^4
B. 9.4*10^5
C. 1.12*10^5
D. 1.12*10^6

18. -x(7x-8)
A. 6x^2-9x
B. -7x-8x
C. -7x^2+8x
D. 7x+8x

19. 4k^2(-3k^2-4k+5)
A. -12k^4-16k^3+20k^2
B. 12k^4-16k^3=9k^2
C. -12k^3+20k
D. k^4+9k^2

20. (2k+1)(k-3)
A. 2k^2-7k+4
B. 2k^2-3k+4
C. 2k^2+9k+4
D. 2k^2-7k-4

21. (3k+2k)(y+3)
A. -3y^2-7y+6
B. 3y^2-11y+6
C. 3y^2-7y-6
D. 3y^2+11y+6

Some of the questions I know how to do but these ones confuse me. Thank you!!!

Answer 1

i would be very happy to help if you would show me your suggested answer...

Answer 2

I could try but I am not good at these...

Answer 3

You'll get better if you think and try and try!

Answer 4

ok I guess but I really do need help with these! I truly do not wan to fail math!

Answer 5

You won't fail math if you learn how to do the problems.

Answer 6

ok but I know how to do some of them but these are giving me a hard time.

Answer 7

So... Can anyone help me with these problems?

Answer 8

Help! Please!

Answer 9

I think that 3 is B... 4 I think is B... 6 is maybe A... 7 I think is B... 15 is maybe C... 18 is possibly C... 19 is maybe B... 20 is I think C... and 21 is possibly A? Any way.. I don't think that these are correct...

Answer 10

3 is c
look it up on google