#index laws questions help!

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eternal shadow
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the first image is the question, the second image is what i worked out/got, and the last image is the answer. im a bit confused on why the answer is that, can someone please explain? i was asked to simplify it btw

IMG_5029.heic IMG_5030.heic IMG_5031.heic
limpid wigeonBOT
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limpid wigeonBOT
eternal shadow
tacit moat
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Simple

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U have done it right

eternal shadow
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ohh

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ty!

eternal shadow
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could someone also explain this question? 1st image is the question, 2nd image is my working out and 3rd image was the answer

IMG_5039.jpg IMG_5037.jpg IMG_5038.jpg
odd dove
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So basically, first you should reciprocate the second fraction

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I think since you tried to simplify first, it went wrong

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The '8k' in denominator of the first fraction cancels out with '16k' in the numerator of the reciprocal of the second fraction

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This leaves only '2' in place of 16k and m^3 in place of 8km^3

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Again, 10k^x m^y cancels out with 5k^x m^2x, leaving 2m^y and m^2x respectively

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So after all this, it just looks like (4m^y)/(m^(2x+3))

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Now try to use the division index law to simplify this

odd dove
eternal shadow
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im not sure why i have to minus the 2x

eternal shadow
tacit moat
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what are bodmas/pemdas

odd dove
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Bodmas relies on doing division before multiplication, and pemdas relies on doing division or multiplication, whichever comes first

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In this case

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You have to do the division first

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Get what I mean?

odd dove
tacit moat
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Also, if whatever is that rule, if it is applicable y is answer in 2 question correct?

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It's simply because they don't follow pedmas whatever in 1st one that's just s printing mistake

odd dove
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I dont follow

tacit moat
odd dove
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Therefore we did not have to resort to pemdas or bodmas

tacit moat
odd dove
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It was less confusing

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It was easier to know what to do first

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But in the first question, the order you take will matter

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Are you multiplying b^3 with w^2x or the other term

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The answer changes based on this

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Pemdas/bodmas helps to clear this and give only one answer

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Does what i say make sense?

eternal shadow
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i dont mean to interupt the convo but if you have some time could you maybe explain the first question? in the answers textbook there's no working out so im confused on how to get the answer

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its alr if you cant though

odd dove
eternal shadow
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yess

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index laws questions help!

odd dove
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Can you join the general vc?

eternal shadow
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okoko

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oh wait i dont have that in my channels list

odd dove
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Its in main chat

eternal shadow
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gimme a sec i needa remove my study only role

odd dove
eternal shadow
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tysm!!!!!!!

odd dove
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Anytimee

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If you have any more doubts, you can ask here, or close the chat

eternal shadow
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yess i will thank you againn 🥹

odd dove
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Npp

tacit moat
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I can't say that's wrong

limpid wigeonBOT
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@eternal shadow

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eternal shadow
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+close

limpid wigeonBOT
# eternal shadow +close
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