anonymous
  • anonymous
PLEASE HELP, I AM ABOUT TO CHEW MY ARM OFF OVER THIS!!!!!
Mathematics
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anonymous
  • anonymous
PLEASE HELP, I AM ABOUT TO CHEW MY ARM OFF OVER THIS!!!!!
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Rocky simplified an expression in three steps, as shown:
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
Which is the first incorrect step and why? Step 1, all the exponents are increased by 2 Step 1, all the exponents are multiplied by 2 Step 2, the exponents in the denominator are added during multiplication Step 3, the exponents of the same base are added during division

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nuttyliaczar
  • nuttyliaczar
Keep in mind that anything with a negative exponent is just one over that term with a positive exponent. For example, x^-1 = 1/x
nuttyliaczar
  • nuttyliaczar
Does that help at all?
anonymous
  • anonymous
Ok, yes that helps ALOT, it's just that i have one more assignment after this one, and i am out of school, So i think i am just stressed out.
anonymous
  • anonymous
Of thinking if i will pass or not.
nuttyliaczar
  • nuttyliaczar
Well I'm here for any other questions you may have. I'm not saying I'm the best help but I will try my best
anonymous
  • anonymous
So can you help me eliminate real quick?
nuttyliaczar
  • nuttyliaczar
Yeah I'm here
anonymous
  • anonymous
I think we can rule out C
nuttyliaczar
  • nuttyliaczar
Yeah multiplying like terms with exponents just means you add their exponents together
anonymous
  • anonymous
We can eliminate A because, increasing means to add, and they are multiplying it by 2.
anonymous
  • anonymous
I think it's B
anonymous
  • anonymous
because they are doing that, in step1
nuttyliaczar
  • nuttyliaczar
Well consider what multiplying the exponents by two means. When you have any term to the 2nd power that just means you multiply it by itself. So if you look at just the numerator here, (x^-5)(y^2) times itself is basically just multiplying the exponents by two
nuttyliaczar
  • nuttyliaczar
Oh woops nvm
nuttyliaczar
  • nuttyliaczar
Stupid mistake, you are right
nuttyliaczar
  • nuttyliaczar
I misread the problem and thought there was only one mistake. Step 3 was a mistake also
anonymous
  • anonymous
THANK YOU SO MUCH!
anonymous
  • anonymous
You have been a really big help, i don't if i could have done it without you :)
nuttyliaczar
  • nuttyliaczar
Um actually second-guessing myself now >.>
nuttyliaczar
  • nuttyliaczar
You do just multiply by two
nuttyliaczar
  • nuttyliaczar
Sorry I'm super rusty, been out of school for too long
nuttyliaczar
  • nuttyliaczar
(x^-5)^2 = x^-10
anonymous
  • anonymous
It's gotta be B because none of the other answer choices are happening in that problem.
nuttyliaczar
  • nuttyliaczar
But B is correct. During step 2 x^6 * x^6 gives us x^12, and that's just (x^6)^2
nuttyliaczar
  • nuttyliaczar
Btw it could be A, since idk what "increased by 2" means
nuttyliaczar
  • nuttyliaczar
Eh I still think it's D, because he shouldn't be adding those exponents during division
nuttyliaczar
  • nuttyliaczar
You always subtract for division
anonymous
  • anonymous
increasing having the property that for any two points in the domain such that one is larger than the other, the image of the larger point is greater than or equal to the image of the smaller point; nondecreasing.
nuttyliaczar
  • nuttyliaczar
Sorry for all the confusion, I'm sure of this now
anonymous
  • anonymous
LOL just looked it up, because idk what it meant either
nuttyliaczar
  • nuttyliaczar
Because look at what he does. He adds 12 to -10 for the x term
nuttyliaczar
  • nuttyliaczar
But if he rewrote x^-10 as 1/x^10 he wouldn't have gotten the same
anonymous
  • anonymous
OH yeah, in division you subtract the exponets, rather than adding them, YOUR RIGHT D IS THE ANSWER
nuttyliaczar
  • nuttyliaczar
Sorry again ^^'
anonymous
  • anonymous
It's ok, i think i have confused myself, it's not your fault.

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