#is this just 3x^2?

61 messages · Page 1 of 1 (latest)

hasty crescentBOT
#
  1. Wait patiently for a helper to come along.
  2. Once someone helps you, say thank you and close the thread with:
+close
  1. Feel free to nominate the person for helper of the week in #helper-nominations
  2. Do not ping the mods, unless someone is breaking the rules.
  3. If you're happy with the help you got here, and the server overall, you can contribute financially as well:
sharp condor
#

i said it wrong 1 sec

opal galleon
#

$\frac{1}{3x^2} = (3x^2)^{-1}$

still breachBOT
#

Ludwig

sharp condor
#

basically it says make it in the form kx^n

opal galleon
#

What is the question?

sharp condor
#

so if you times both the bottom and the top by the bottom then it would make it 3x^12

#

ill screenshot the whole thing

sharp condor
brittle wren
#

well what’s k and n

#

but it doesn’t simplify to 3x^2

sharp condor
#

ik i was being stupid

opal galleon
#

so you write my stuff above in a different way

sharp condor
#

which would work i think

opal galleon
#

What is the power of 3?

#

and why?

sharp condor
#

where did you get the power of 3 from?

opal galleon
#

What is $(2 \cdot 3)^{-1}$

still breachBOT
#

Ludwig

opal galleon
#

and dont use $2 \cdot 3 = 6$

still breachBOT
#

Ludwig

sharp condor
#

sorry im confused cus ive never used cdot

#

in math

brittle wren
#

cdot is times

sharp condor
#

ok

brittle wren
still breachBOT
#

!𒐪 ɹɐupoɯ⇂ㄥ8𝟝 𒐪!

sharp condor
brittle wren
#

well test a value of x

sharp condor
#

idk what that means haha

brittle wren
#

plug in x=1

sharp condor
#

ohhh

#

haha

#

k 1 sec

#

ive literally forgot everything i cant

brittle wren
#

well note that 1 to the power of anything is still 1

#

so we’re left with 1/3=3 which isn’t true

#

so what should our value of k be

sharp condor
#

i dont understand where 1/3=3 came from

brittle wren
#

alright, what’s $1^{2}$ and $1^{-2}$

still breachBOT
#

!𒐪 ɹɐupoɯ⇂ㄥ8𝟝 𒐪!

sharp condor
#

1

#

i mean

brittle wren
#

yup both are 1

sharp condor
#

1

brittle wren
sharp condor
#

idk how that can be used for the equation im so sorry i havent done maths for 3 months

brittle wren
#

alright well

#

we can replace all the x powers with 1 because we know they’re just 1 right?

sharp condor
#

so 1/3^2 cus the 3*1^2

#

i figured out it wouldnt be 3x^-2 but ik its (3x^2)^-1 but i need it in a form that looks like kx^n. you asked what k meant but k is just another number for n.

brittle wren
#

yup, try expanding (3x^2)^-1

sharp condor
#

ive been trying to but i just cant find it

#

cus (3x^2)^-1 = 1/3x^2 but i need a number that is like 3x^2 but with the - in it so it can still make 1/3x^2 if you know what i mean

#

cus i need it in the form of kx^n but i have it as (kx^n)^n

#

so im missing something very small

#

but very important

sharp condor
#

I got it