math

1. add or subtract
{4x^2+15x-3}-(3x^2+5)
a.7x^2+15x-8**
b.x^2+12x+2
c.x^2+15x-8
d.7x^2+8

2. Simplify the polynomial
-3f^2+4f-3+8f^2+7f+1
a.5f^2-11f+2
b.11f^2+11f+2**
c.5f^2+11f-2
d.-5f^2+11-2

3. Add or subtract
(2x^2+6x+1)+(-7x^2+2x-3)
a.5x^2-4x-2
b.-5x^2+8x-2
c.5x^2-8x+2**
d.-9x^2-8x+2

4.Name the coefficients in the polynomial
4x^2+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?
6x^4+3x^3-2x^2+15x-14
a.5
b.4** or
c.3**
d.2

6. In the expression -7x-5x^2+5, what coefficient of x?
a.7
b.5
c.-5**
d.-7

7.write the expression using a single exponent
2^2 * 2^8
a. 4^10
b. 2^10
c. 4^16**
d. 2^16

8.write the expression using scientific notation
(2.5*10^4)(4*10^3)
a.10*10^7
b.10*10^8**
c.1*10^8
d.10*10^12

9.list three different ways to write 5^11 as of two powers. explain why all three of of your expressions are equal to 5^11

  1. 👍 0
  2. 👎 0
  3. 👁 1,014
  1. 1. wrong

    2. wrong

    3. wrong

    4. Wrong, see definition of coefficient

    5. wrong

    6. wrong

    7. Wrong, When multiplying/dividing, exponents are added/subtracted respectively.

    8. Wrong

    Go back to your text book and read your lessons.

    1. 👍 1
    2. 👎 2
  2. 1a
    2c
    3b
    4b
    5a
    6d
    7b
    8c
    okay now are they correct?

    1. 👍 7
    2. 👎 0
  3. yes they are man.

  4. PsyDAG, why are you saying every answer is wrong?

    1. 👍 0
    2. 👎 0

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