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
could you please check my answers, thanks!
1B
2D
3C
4B
5C
6D
7A
8A
9C
10C
11B
12C
13B
14A
These are 1000000000000000000000000000% right i swear