Seems like you will benefit from a quick session of polynomial factorization! Anyway, for your question, factor out 2 and you get 2(4x^2 - 9). Now 4x^2 can be written as (2x)^2 and 9 as 3^2. That is difference of 2 squares and we know in that case we simply add them and subtract them and multiply...

Jasmin - It is a tricky question, but very simple if we stick with the basics. Here is how we can approach:
Step - 1: - Let us eliminate the power 2/3 so raise both sides of the equation to the power 3/2. Once we do that we get:
x - 4 = (100) 3/2
Step...

Let S = Shane and K = Kori
S = 52 Hours when working alone
S and K Together = 39 Hours
K = ?
S and K Together = SK/(S+K) <-- Formula (We have reasoning to explain it based on on work rate concept!)
39 = 52K/(52 +K)
Cross-Multiply...

SAT in general is more popular, or so it seems, but the fact is that a lot of students do take ACT as well. And colleges consider both SAT and ACT results for admissions. While the choice between taking a SAT and ACT is driven by personal choice, comfort level and many other factors (may be a different blog topic for some other time!), the fact is that being prepared for SAT Math does not necessarily...
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Although many students study percentages in 4th grade, I still see most of them struggle with it during their SAT Math practice period. One of the reasons is the lack of sound basic understanding and the second is the lack of faster execution methods.
In this blog, I wanted to share a quick review of some of the basic yet typical problems. You might even use it in your daily life!
(a)...
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I am glad you are reading this blog post! Sure, the title was catchy, and it was actually intentional!
However, the real intention of this blog post is different. Today, I want to talk about SAT Math, and the elements involved to actually ace it. Let us start by saying that SAT Math is not THE hardest Math test in the world. There are many tougher tests (just Google IIT JEE exam in India for...
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This year October, many High school seniors will be taking the SAT. While some go and attempt it with all the preparation, there are many who attend it with a lingering fear and anxiety, regardless of those "stay calm, be yourself and stay confident" suggestions from their parents, siblings or teachers. As a SAT Math tutor, I understand the anxiety that precedes the SAT. While I would...
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For many of us who have Calculus phobia, the whole concept of Pre-Calculus is like a pre-phobia. However, Precalculus leading all the way to calculus, has man real-life applications! I say that in particular because many students would say "Oh well, now why study this in maths! When and where are you going to use it?" Sure. I understand the question and the reason behind it. So, if we...
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Math is everywhere. Math is used in all walks of life. Engineering, Aeronautics, Navy, NASA, Astronomy, Shopping, daily life - you can easily see one or the other application of math - if you keep your eyes open and your interest active. Given this ubiquitous nature of math, it drives my passion to share it with others and help build math fans.
Let me relate a short anecdote: My 9 year old...
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Once I heard a student remark "I get it when they have x and y in a equation; but when they add a, b and c, not sure what is going on!!" Trust me over 45% students abhor algebra because of its bad reputation of an abstruse math topic that combines alphabets and numerals. However, once they start appreciating the need and the value of a variable (the unknown!) or variables, their algebra...
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Having fun with Math: rapid fire multiplication tables, addition - Fast Paced! Buckle up folks!!