Algebra Plz Ceck

1.add or subtract.
(4x²+15x-3)-(-3x²+5)
A:7x²+15x-8***
B:x²+12x+2
C:x²+15x-8
D:7x²+8

2.Simplify the polynomial.
-3f²+4f-3+8f²+7f+1
A:5f²-11f+2
B:11f²+11f+2
C:5f²+11f-2
D:-5f²+11f-2***

3.Add or Subtract.
(2x²+6x+1)+(-7x²+2x-3)
A:5x²-4x-2
B:-5x²+8x-2***
C:5x²-8x+2
D:-9x²-8x+2

4:Name the coefficient in the polynomial.
4x²+3x-3
A:4,-3,-3
B:4,3
C:4,3,3***
D:-4,-3

5:how many terms are in the following polynomial?
6x⁴+3x³-2x²+15x-14
A:5***
B:4
C:3
D:2

6:in the expression -7x-5x²+5 what is the coefficient of x?
A:7
B:4
C:3
D:2***

7.write the expression using a single exponent.
2²•2^8***
A:4^10
B:2^10
C:4^16
D:2^16

8:write the expression using scientific notation.
(2.5•10⁴)(4•10³)
A:10•10^8***
B:10•10^8
C:1•10^8
D:10•10^12

My Answers
1.A
2.C
3.B
4.B
5.A
6.D
7.B
8.C

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  1. Sorry my really answers are on the bottom i forgot to erase the ***

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  2. 1.A - yes
    2.C - yes
    3.B - yes
    4.B - yes
    5.A - yes
    6.D - I don't think so -- but I'm not sure.
    7.B - I don't think so -- but I'm not sure.
    8.C - I don't know.

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    👩‍🏫
    Ms. Sue
  3. 6. B??

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