Question

(5 questions please help correct my incorrect answers)

1.Simplify x/7x+x^2
A.1/7+x;where x≠-7
B.1/7x;where x≠0
C.1/7+x;where x≠0,-7
D.1/7****

2.Simplify -12x^4/x^4+8x^5
A.-12/1+8x;where x≠-1/8****
B.-12/1+8x;where x≠-1/8,0
C.-12/9x;where x≠0
D.-12/9

3.Simplify x^2-3x-18/x+3
A.x-3
B.x-6;where x≠-3
C.x-6;where x≠6
D.1/x+3;where x≠-3****

4.Simplify 7/2a•5/a^2
A.35/2a^2;where a≠0
B.35/2a^2****
C.12/2a^3;where a≠0
D.35/2a^3;where a≠0

5.Multiply
x-5/4x+8•(12x^2+32x+16)
A.(3x+2)/4(x-5)
B.(x-5)(3x+2)/4****
C.(x-5)(3x+2)
D.(x-5)(12x+8)

Answer 1

I think the answers for 1-5 are:
1.D
2.A
3.D
4.B
5.B
But I'm not sure, please help

Answer 2

You still need help?

Answer 3

Yes @Rootbeer003 I do very much :'( do you think you could help?

Answer 4

Let me take a look

Answer 5

Okay :) thank you @Rootbeer003 I've needed help with these problems for a while now and no one came to help me yet except you.

Answer 6

\[\frac{ x}{7x+x^2}=\frac{x}{x(7+x)}\]

Answer 7

then cancel

Answer 8

sorry i fell asleep

Answer 9

i should take credit for helping cause i was here first

Answer 10

@Rootbeer003 @Satellite73 can you tell me if 1-5 are wrong and what's the correct answer :( I hate a lot of question and I spent most on the time trying to see if I could get help and rechecking if I'm correct or not. I can tell you my other theory for the questions if you like