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Re: GRE practice with fractions and exponents  TOPIC_SOLVED

You can review the basic exponent laws here : http://www.purplemath.com/modules/exponent.htm But basically, when you have (x/y)^n, you can write this as (x)^n/(y)^n. If you do that, and remember what 1^n equals, you may figure out how to rearrange the equation in a form that makes it easier for you ...
by QM deFuturo
on Wed Aug 05, 2009 8:46 am
 
Forum: Beginning Algebra
Topic: GRE practice with fractions and exponents
Replies: 5
Views: 3100

Re: Logarithms: Expanding, Condensing, and Natural Logs  TOPIC_SOLVED

Well you can review the properties of logs here:

http://www.purplemath.com/modules/logrules.htm

If you look at these, and look at your equations, you will probably be able to figure out how to re-write them to solve the problem. :D

QM
by QM deFuturo
on Wed Aug 05, 2009 8:52 am
 
Forum: Advanced Algebra ("pre-calculus")
Topic: Logarithms: Expanding, Condensing, and Natural Logs
Replies: 1
Views: 3248

Re: Factoring Polynomials: 2x^5 - 7x^3 - 4x, x²(x + 2) - x(x + 2  TOPIC_SOLVED

You haven't shown what you have tried yet, so it's hard to tell exactly what you are "stuck" on. One suggestion, I see in both cases there are common factors that you can factor out of each equation and re-write them, so that the various factors will be lower powers, and easier to work wit...
by QM deFuturo
on Wed Aug 05, 2009 4:34 pm
 
Forum: Intermediate Algebra
Topic: Factoring Polynomials: 2x^5 - 7x^3 - 4x, x²(x + 2) - x(x + 2
Replies: 7
Views: 4013

Re: Factoring Polynomials  TOPIC_SOLVED

I have to do summer work for school and I can not figure out this problem of factoring! -4p^2 + 25q^2 What have you tried so far? Do you notice any patterns in this equation that you could use? What are some factoring rules you do know? Have you seen these particular rules before : http://www.purpl...
by QM deFuturo
on Wed Aug 05, 2009 7:02 pm
 
Forum: Intermediate Algebra
Topic: Factoring Polynomials: -4p^2 + 25q^2
Replies: 5
Views: 1498

Re: Factoring Polynomials: 2x^5 - 7x^3 - 4x, x²(x + 2) - x(x + 2  TOPIC_SOLVED

x²(x + 2) - x(x + 2) - 12(x + 2) If you are still confused about how to factor this the way it is now, how about this: x²A - xA - 12A Can you factor this? Notice in the first equation, you could let A = x +2, and maybe if you rewrite the polynomial temporarily in the second form you can simplify it...
by QM deFuturo
on Thu Aug 06, 2009 10:51 pm
 
Forum: Intermediate Algebra
Topic: Factoring Polynomials: 2x^5 - 7x^3 - 4x, x²(x + 2) - x(x + 2
Replies: 7
Views: 4013

Re: Quadratic form help  TOPIC_SOLVED

It looks like you are trying to use the quadratic formula. I would suggest first you review it here: http://www.purplemath.com/modules/solvquad4.htm Next, double check the formula, and what you are using as values for A, B, and C. It usually helps to actually write down these values at the top of yo...
by QM deFuturo
on Tue Aug 11, 2009 7:19 am
 
Forum: Intermediate Algebra
Topic: Quadratic form help: x^2 - 3x + 1 = 0
Replies: 4
Views: 1601

Re: math: don't understand how to simplify | 2 + 3 ( -4 )  TOPIC_SOLVED

Is this an absolute value problem? If so the last line of the absolute value symbol was left out of your original problem. I'm going to assume this is supposed to be |2+3(-4)| First, just solve the inside part of the absolute value, i.e., 2+3(-4) Do you know how to solve this? Then remember the defi...
by QM deFuturo
on Tue Aug 11, 2009 8:15 pm
 
Forum: Arithmetic
Topic: math: don't understand how to simplify | 2 + 3 ( -4 )
Replies: 2
Views: 1998

Re: Solve for x by factoring  TOPIC_SOLVED

You want to combine like terms and get everything on one side of the equation, to end up with something in the form of

ax^2 + bx + c = 0


Then you can factor this equation using the various procedures for factoring a quadratic equation.

QM
by QM deFuturo
on Wed Aug 12, 2009 12:17 am
 
Forum: Beginning Algebra
Topic: Solve 2^2+5x+6 =-x^2-2x for x by factoring
Replies: 5
Views: 2366

Re: math: why does -3(-3) = +3? how is this solved?  TOPIC_SOLVED

Hello, I have a quick question. why does -3(-3) = +3 how is this solved? thx. Is this supposed to be a multiplication problem? I.e, are you multiplying negative 3 by itself? If so, then your equation is not correct. If you just ignore the minus sign for the moment, what is 3 times 3? It's not 3! Wh...
by QM deFuturo
on Thu Aug 13, 2009 12:57 am
 
Forum: Arithmetic
Topic: math: why does -3(-3) = +3? how is this solved?
Replies: 2
Views: 1745

Re: Finding the domain of radical, rational, polynomial fcns  TOPIC_SOLVED

I was wondering if I did this part of my homework correctly. Thanks your input would be greatly appreciated. :) State the domain of the following: :) g(x)=(2x+1)/(x-7) domain= all numbers x different form 0 e) m(x)=3/(x^2+7) domain = all numbers x different from 0 Well, as they say, you're "ge...
by QM deFuturo
on Thu Aug 13, 2009 1:08 am
 
Forum: Intermediate Algebra
Topic: Finding the domain of radical, rational, polynomial fcns
Replies: 2
Views: 2264
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