Question

Could someone please help with these few questions, and make sure they are right?

1. Simplify x over 4 x + x^2
is the answer 1 over x + 4; where x =/ -4, 0

2. Simplify x + 7 over x^2 + 4x - 21
is the answer 1 over x - 3


3. -14x^3 over x^3 - 5x^4
is the answer -14 over 5x - 1


4. Simplify x^2 + 3x - 21 over x + 2
is the answer x - 5


5. Multiply k + 3 over 4k - 2 times (12k^2 + 2k - 4)
is the answer 3(k + 3) over 3k + 2

Thank you !!!

Answer 1

Remember, for #1 you added the condition that x=/=-4 or 0, you must add all those conditions for th eother problems, strictly speaking.

Answer 2

So the answer is wrong?

Answer 3

Well for long answer, you might lose points depending on how picky the teacher was. FOr multiple chioce, if there are no chioces with limitations, you should be fine.

Answer 4

Oh okay thank you @inkyvoyd and they are multiple choice.

Answer 5

I didn't manage to check them all, but I'm sure @dpaInc , or @nbouscal would be glad to help.

Answer 6

Oh okay how can I get ahold of them?

Answer 7

I tagged them, so they should be here shortly, unless they are away. dpalnc is reading something I wrote, so you might want to give him 1 or two minutes.

Answer 8

Oh okay thank you so much @inkyvoyd

Answer 9

No problem :)

Answer 10

#2 is correct... need x=/3, -7
#3 need x=/(1/5), 0
#4 check again
#5 check again

Answer 11

Okay thank you @dpaInc