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December 8th, 2008, 04:42 AM  #1 
Newbie Joined: Dec 2008 Posts: 6 Thanks: 0  high school algebra
Okay so if I could get help with these problem I would really appreciate it. x^2+3x 18=0 2x^2[/size]  11x + 15 = Solve for all a's and b's. 105a^3b + 27a^2b^2  33ab^3 This would really help me. im studing for a math placement test and these are some of the preview questions. 
December 8th, 2008, 01:15 PM  #2 
Senior Member Joined: Jul 2008 Posts: 895 Thanks: 0  Re: high school algebra
Review Factoring.

December 8th, 2008, 08:31 PM  #3 
Newbie Joined: Dec 2008 Posts: 6 Thanks: 0  Re: high school algebra
Good thanks alot. I'll do that.

December 8th, 2008, 09:33 PM  #4 
Newbie Joined: Dec 2008 Posts: 2 Thanks: 0  Re: high school algebra
X2+3x18=0 x2+3x=18 x=3,6 2x211x+15=what? 
December 9th, 2008, 08:49 AM  #5  
Senior Member Joined: Jul 2008 Posts: 895 Thanks: 0  Re: high school algebra Quote:
 
December 9th, 2008, 08:58 AM  #6 
Newbie Joined: Dec 2008 Posts: 6 Thanks: 0  Re: high school algebra
Reviewing factoring like i was suggested i think i figured this one out. 105a^3 b + 27a^2 b^2  33a b^3 = 3(35a^3 b + 9a^2 b^2  11a b^3 I'll be so freckin excited if i got this right. 
December 9th, 2008, 01:52 PM  #7  
Senior Member Joined: Jul 2008 Posts: 895 Thanks: 0  Re: high school algebra Quote:
=3ab(35a^2 + 9ab  11b^2) The trinomial will not factor further ...but your first two will! As I suggested, don't waste your time here; you need to understand the underlying concepts. Pick up a text and study the explanation and the examples ...and your class notes if not doing this entirely on your own. Don't worry too much if you find it a bit difficult. Just keep practicing with known examples. I've attached an exercise spreadsheet, OpenOffice [Calc] format. The first sheet is on multiplication of binomials that produce trinomials. The second sheet is the answers to those. OR, use the second sheet as the trinomial factoring exercise and the first to be the answers to those. Press F9 to generate a new set of problems. Entirely free, of course, in every sense of those words.  
January 5th, 2009, 12:27 PM  #8 
Newbie Joined: Jan 2009 Posts: 3 Thanks: 0  High school algebra
I will write my notes that my teacher has taught me in school this is guide to do algebra on calculator Variables Any lowercase letter may be used as a variable. Exponents Exponents are supported on variables using the ^ (caret) symbol. For example, to express x2, enter x^2. Note: exponents must be positive integers, no negatives, decimals, or variables. Exponents may not currently be placed on numbers, brackets, or parentheses. Parentheses and Brackets Parentheses ( ) and brackets [ ] may be used to group terms as in a standard equation or expression. Multiplication, Addition, and Subtraction For addition and subtraction, use the standard + and  symbols respectively. For multiplication, use the * symbol. A * symbol is not necessiary when multiplying a number by a variable. For instance: 2 * x can also be entered as 2x. Similarly, 2 * (x + 5) can also be entered as 2(x + 5); 2x * (5) can be entered as 2x(5). The * is also optional when multiplying with parentheses, example: (x + 1)(x  1). Order of Operations Order of Operations The calculator follows the standard order of operations taught by most algebra books  Parentheses, Exponents, Multiplication and Division, Addition and Subtraction. The only exception is that division is not currently supported; attempts to use the / symbol will result in an error. Division, Square Root, Radicals, Fractions The above features are not supported at this time. A future release will add hthis functionality. Recently I have subscribed to a site and I am getting free tips here is that site http://www.rapidlearningcenter.com Here is a Math Movie http://www.rapidlearningcenter.com/mathematics 
January 6th, 2009, 09:10 AM  #9  
Global Moderator Joined: Dec 2006 Posts: 19,712 Thanks: 1806  Quote:
I wouldn't recommend using a calculator for simple algebra (except perhaps to provide graphs). If you don't have a suitable textbook, try some of the many websites that provide free information, worked examples, tests and quizzes. Try to understand what is going on overall, rather than just how each individual problem is solved.  

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