Quadratic equation links:
http://www.youtube.com/watch?v=ZQ-NRsWhOGI
Try watching the youtube clip above, it goes through all types of factorising for quadratic equations and it is very good. If you can follow it then you must back it up with a lot of practice.
2x^2 - x - 15
I was going to do this for you but you really should watch the clip.
http://web2.0calc.com/questions/grouping-method-and-factorizing-quadratic-equations
This is a very similare question that I have worked through before.
(It even has the address of the clip that I have directed you to watch on the bottom.)
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Here's another resources that are available here
http://web2.0calc.com/questions/quadratic-formula-do-you-have-trouble-remembering-it
$$\\3(h^3+h^2)=108\\\\
h^3+h^2=36\\\\
\mbox{I don't know how to do this without 'guessing'.}\\
\mbox{So I am going to present if easier for guessing}\\\\
h^2(h+1)=36\\\\
That\; is\;\; 9*4=36\\\\
h=3 \\\\
\mbox{So that is one solution - it is a cubic so there are 2 more but they might be imaginary numbers}\\\\
\\$$
Here are the answers. There is only one real one.
http://www.wolframalpha.com/input/?i=solve+h%5E3%2Bh%5E2%3D36
@@ End of Day Wrap: Sun 7/9/14 Sydney, Australia Time 6:15pm ♬
Hi all,
I powered through the questions last night and today (along with Aziz) and at a glance they all seem to have a reasonable answer. Right back to the last proper wrap which was last Thursday. I am very pleased about that.
(With the exception of a couple of high end commercial questions) ![]()
Now for the credits. Our great answerers over these few days have been HaleyWoodall17, Alan, AzizHusain, CPhill, Rosala, NinjaDevo, Honga, Kitty<3, Blazinkurama, DragonSlayer554, DevSeth, Heureka, Helen1709 and LLABlackJack. A big thank you to each of you. ![]()
Blazinkurama and DevSeth are both new. I like to take this opportunity to welcome you to web2.0calc forum. We all hope that you enjoy yourselves here. ![]()
Now for a few interest threads:
1) is it divisable by 3 - I handy trick to know (Thanks Alan)
http://web2.0calc.com/questions/is-1786-divisible-by-3
*2) Solving an equation using a graphing calculator.
*3) Here is a great combination question. They are always contraversial LOL
And that is is for my Sunday. Enjoy the rest of your weekend. ![]()
♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫