09222003, 03:39 PM  #1 (permalink) 
Fireball
Location: ~

Help In College Algebra (rudimentry stuff)
Hey guys! I've really learned a lot so far from the links that you've given me. thank you very much! I'm still having few troubles with some promblems that I need to understand for my test
Answers are on bottom. I worked some out as much as I could. Thank you for your help! Question 1  Factor each polynomial 20z2 + 18x2 – 8zx – 45zx _____________________________________________________________ Question 2 – Simplify the rational expression by reducing to lowest terms. 8x3 – 27_____ 8x2 – 14x + 3 Next __ ?___________ (4x  ?)(2x ? ) __________________________________________________________________ Question 3 – Simplify the following rational expressions by performing the indicated operations. Write answer in lowest terms: 2m² – 5m +12 ÷ 4m²  9________ m ²  10m + 24 m ²  9m +18 Next (2m+?) (m?) ÷ (2m + 3)(2m3) (m4)(m6) (m 6)(m3) ________________________________________________________ Question 4 – Divide: 2x ²  4x + 5 3x – 2 ________________________________________________________ Question 5 – Expand: (4x ³  3y²)4 ANSWERS 1 – (2x5z)(9x4z) 2 4x2 +6x +9 4x 1 3  m3 2m3 4 2x – 8 + 29___ 3 9 27x  18 ("two over three times X minus eight over nine plus 29 over 27x minus 18") 5 256x12 – 768x9y2 +864x6y4 – 432x3y6 + 81y8 
09222003, 04:13 PM  #2 (permalink)  
Loser
Location: who the fuck cares?

Re: Help In College Algebra (rudimentry stuff)
First, let me start by saying if you want to express "x squared", please don't type x2. That would be represented as x^2 (x to the second power).
Now... Quote:
Quote:
But I think you were trying to say: (8x^3  27) / (8x^2  14x + 3) The numerator is the difference of cubes (both terms are a perfect cube and one is being subtracted from the other). And the difference of cubes can be factored as A^3  B^3 = (A  B)(A^2 + AB + B^2). The denominator is also factorable. After you factor both numerator and denominator, you will see that something will cancel. Start with those. And I'll get back to you on the rest. 

09222003, 04:27 PM  #3 (permalink)  
Loser
Location: who the fuck cares?

Re: Help In College Algebra (rudimentry stuff)
Quote:
Just finish your factoring (I wont factor for you). Quote:
All you ever needed to know about polynomial long division, but were afraid to ask. Quote:


Tags 
algebra, college, rudimentry, stuff 
Thread Tools  

