I met a student and she passed me this paper with this Lg question on it, asking me on the solution for solving this equation :=(lg3)^2 "\lg(x-2)=(lg3)^2")
Coincidentally, I was asking a few O Level students of mine on which are the “Killer A-Maths Topics” for them. Logarithm, Indices, Surds is one of the common topic which is ranked high on their list.
Now back to the question.
PS:
Notice that right hand side of the equal sign is something you can compute using the calculator hence,
= 10^{(lg3)^2} "(x-2)= 10^{(lg3)^2}")
Use your calculator to find out the value of ^2} "10^{(lg3)^2}")
and the value is 1.69 ( round off to 3 significant figure) so the answer for this question is
I will be coming out with a series of posts on Logarithms since it is a “hot” topic for students :-) Subscribe to my feeds to be updated of this post.
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I have discussed about Quadratic Equations and Graphs previously in Features of Quadratic Equations and Graphs , Different representations of quadratic equations and their significance
This is really an important topic for students taking E-Math (elementary math) , more so for A-Math (additional math) as well.
Be sure that you know the basic of recognizing if a given equation is quadratic, how the quadratic equation looks like, the 5 main features of a quadratic graph, the different methods to solve a quadratic equation.
For students taking A-Math, you would definitely need to know more about the discriminant, sum or product of roots.
I would be elaborating more on methods to solve a quadratic equation and tips on discriminant so be sure you follow the blog by subscribing to the feed here.
By netsrot
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I read about this content held by Student Blog Project.
Who says there is no free lunch? Now we have even Free McDonald :)
To find out how to be part of this Free McDonald, check out Student Blog Project.
I’m sorry this is only open to Full Time Students in Singapore who have a blog.
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Hi,
I'm Ai Ling. I enjoy coaching students who have challenges with
understanding and scoring in 'O' Level A-Maths and E-Maths. 
