you can easily check your work by typing in your expressions at
wolframalpha.com
It will show how they can be simplified, and much other information as well.
Check my answers please!!!!
I really don't know how to do these but I tried my best
1. Simplify. 3x^2+ 5x-5x^2-4x+5-2
A.-8x^2-9x+3
B.2x^2+x+3
C.-2x^2-9x+3***
D.-2x^2+x+3
2. Add or Subtract.(8x – 2y) + (3x – 4y)
A.11x+8y
B.4x-y
C.11x-6y***
D.5x+2y
3.(5x^2-4x-1)-(-4x^2-4)
A.-9x^2-8x-1
B.9x^2-4x+3***
C.x^2-4x-3
D.9x^2+4x-3
4.The distance from Newtown to Old town on the highway is (6x^2 + 2x – 2) miles. Using the back roads, the distance is (5x^2 – 8x – 6) miles. How many miles shorter is the second route?
A.11x^2 + 10x – 8
B.–x^2 – 6x + 4
C.x^2 + 10x + 4
D.x^2 – 6x – 8
idk #4
5.write the expression using a single exponent. 7^5 times 7^6
A.49^30***
B.7^30
C.49^11
D.7^11
6. 6^a times 6^v
A.6^a+v
B.6^av
C.36^av***
D.36^a+v
7.2^8 over 2^7
A.2^1
B.2 and 8 over 7***
C.2^56
D.2^15
8.x^56 over x^24
A.x^80
B.x^23
C.x^32
D.none of these
idk #8
9.write the result in scientific notation. (9 times 10^4)(8 times 10^6)
A.7.2times 10^25
B.1.7times 10^11
C.7.2times 10^11
D.1.7times 10^25***
10.Simpify the expression. (-8x)times 3x^2
A.-5x^3
B.-24x^2
C.-24x^3
D.-5x^2
im struggling with the last three and I don't want to guess
11.(-11z)^0
A.z
B.1
C.-11
D.-1
12.14^-4
A.1 over 14^4
B.-56
C.1 over 14
D.1 over 14^4
Can you check these and if I get some wrong will you help me solve them or explain them to me? Thanks!
4 answers
I did, but not the information I needed
Jazmin what you could do is just look them up and find the answer that's the closest
when I looked them up it gave me answers that aren't in your choices so idk