Question

1. (m^2-m+3)+(m-1)
a. m^2-m-2**
b. m^2+2
c. m^2-2
d. m^2+m+2


2. (5x^2+x-3)-(-2x^3+4)
a. -2x^3+5x^2+x-7
b. -2x^3+5x^2+x+1**
c. 2x^3+5x^2+x-7
d. 2x^3+5x^2+x+1


3. f^2*f^3
a. f^5**
b. f^6
c. (2f)^5
d. (2f)^6


4. 64^10/64^5
a.64 10/5
b.64^50
c.64^15**
d.64^5


5. x^16/x^3
a.x 16/3
b.x^48**
c.x^19
d.x^13


6. 4^4 * 4^10
a. 4^14
b. 4^6
c. 4^40**
d. 4^10


7. 4^4 * 4^44
a. 4^176
b. 4^48**
c. 4^40
d. 4^28


8. 3^4/3^4
a. 3**
b. 0
c.1
d.4


9. 4^7/4^9
a.-16
b. 1/16
c. 1/8**
d. 8

Answer 1

#1 nope. Odd, since you got it right in your previous post.
#2 same comment
#3 ok
#4 nope - subtract powers when dividing
#5 same comment
#6 nope. Odd, since you got #3 right
#7 ok
#8 nope. look carefully. write out the products if you must. see what cancels in the division. Or, let = 3^4. Then you have u/u.
#9 Nope. 4^-2 = 1/4^2

Answer 2

4.d
5.d

Answer 3

that's better