After 9 years of graduating from highschool, I finally got the chance to go to college/university. I need some help with some math excercices.
Anyone willing to help a poor bastard? Interested mainly in the process to solve them
i will, give me a second
Tip: When you move a term from the top to bottom (or bottom to top) you change the sign of the exponent.
For example, b^-2 on top becomes b^2 on the bottom.
add powers of b and d including the signs
ie power of b in the numerator will be -2+1=-1
d will be 3+1
>>722389149
ans is 1/32 d^25/b^20
1
2
3
and done, it's easy algebra
Look at the numbers. You've got 2 x 3 on top and 12 on the bottom. So that's 6/12 which is just 1/2.
Then look at the b. You've got b^-2 * b on top and b^3 on the bottom. Well, b^3 on bottom is the same as b^-3 on top. So add together the exponents and that's b^(-2+1-3) which is b^-4. If you're wondering where I got the +1 from it's because b is the same as b^1, and the -3 comes from the b^3 on the bottom becoming b^-3 on top.
Then look at the d. The d^-1 on the bottom is the same as d^1 on top. So you've got d * d^3 * d^1 (keep in mind that d and d^1 is the same thing) which is d^(1+3+1) = d^5.
So you've got 1/2 * b^-3 * d^5.
From the 1/2 you've got the 1 on top and the 2 on the bottom. From the b^-3 you've got b^3 on the bottom. And from the d^5 you've got d^5 on the top.
So that's (d^5) / (2 * b^3).
Finally, the whole thing is raised ^5 so you just multiply all the exponents by 5.
You get d^25 / (2^5 b^15)
= d^25 / 32b^15
Hope that helps. Follow each step to understand what I'm doing (and hopefully I didn't make any mistake).
>>722389369
Oops, I made a mistake. Where I wrote "So you've got 1/2 * b^-3 * d^5" it should be "So you've got 1/2 * b^-4 * d^5" and it ends up as d^25 / 32b^20.
>>722389369
Good explanation. But one mistake:
> So add together the exponents and that's b^(-2+1-3) which is b^-4.
> So you've got 1/2 * b^-3 * d^5.
You lost a b there, so the final answer should be d^25 / (32*b^20)
>>722389369
>>722389570
Thank you very much for taking the time. Even though English is not my native language I could understand the process perfectly.
I got one last question if possible, regarding another kind of excercise
I already made a few excercises of this kind, but this one in particularhas me spinning. Might be easy but can't figure it out.
>>722390169
faggot, i helped you too >:(
>>722389240
>>722389266
>>722389287
>>722390726
My apologies, thanks for your help too, meant no harm. Only saw the last one. Took me a bit longer to understand it from ur side but also worked!
>>722390848
lol, sorry for calling you faggot, I'm trying to solve this too:
>>722390368
>>722388138
curious but, you're going into a university and don't know algebra that is taught in middle school?
>>722390368
take cube root of both sides
also 3.3^n+1 = 3^n+2
therefore it says (3^n+2 + 3^n+2):(3^n+2)=2
Dividing by 3^n+2 we get 2:1=2 which is always true thus this is true for any value of n
>>722391075
I do know, the thing is that after such a long time of not using any of the concepts, things kinda got forgotten.
>>722391255
Oh I see
I'm the same anon as >>722391220
btw
d^25/32b^20
>>722390368
Tutor-fag here, but I'm getting offline shortly.
Here, I typed this up in MathType.
The ":" means a ratio, or division.
>>722391334
>>722391486
Thank you both. I feel really dumb now after seeing how it's done. Although I had a vague idea, couldn't help myself.
Thanks to everyone that helped a faggot get his math crap right.