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secondary 4 | A Maths
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secondary 4 chevron_right A Maths chevron_right Singapore

why is this wrong :
2log8x - log2x
2log(8x/2x)
2log4
2log2^2
2

Date Posted: 1 month ago
Views: 53
Eric Nicholas K
Eric Nicholas K
1 month ago
In log 8x^2, the “square” belongs to x only.

Had it been log (8x)^2, we could have written the result as 2 log 8x.
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1 month ago
thanks :) by the way how does polar covalent bond work? i dont understand when is a covalent compound considered a polar molecule or non polar molecule (dont understand the whole dipole thing too)
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1 month ago
also does polar covalent bond exist as long as the compound consist of 2 different non metal elements, like they dont have to be far apart?
from what i know non polar covalent bond applies only to diatomic gases like F2 N2 O2 etc
Eric Nicholas K
Eric Nicholas K
1 month ago
This I have actually forgotten about it though, since I last touched them almost 15 years ago without reviewing them again.
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1 month ago
ahh its fine... thanks for helping me with the qn :)
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1 month ago
Hi Mr Eric, may i ask if you are ok with me sending a few algebra questions for you to check my work? i cant post it here for some reasons so i can only send you privately (through email etc)

its fine if your are not comfortable with it too!
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1 month ago
if you are ok with it i can send it to you around next week :)
Eric Nicholas K
Eric Nicholas K
1 month ago
You can use the Symbolab application or some other solver to check your answer there.

They have tools to evaluate unknowns, solve simuls, simplify expressions, find integrals and so on.
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1 month ago
some of the questions i have are long problem solving questions though...
the one on matrices is a long problem solving question (parts a to e)
im willing to pay for guidance too

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Arnold K H Tan
Arnold K H Tan's answer
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1 month ago
thx :)
Arnold K H Tan
Arnold K H Tan
1 month ago
Welcome