My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
July 31st, 2015, 04:07 PM   #1
Member
 
Joined: Sep 2014
From: Toronto

Posts: 43
Thanks: 0

Polynomial Questions

Hey guys! I APOLOGIZE FOR THE SIZE OF THE PHOTOS IT'S MY PHONE!

So I'm having trouble solving the following equations. Any assistance would be greatly appreciated.

It's an old test paper, for those of you might think I'm cheating.





Zery is offline  
 
July 31st, 2015, 04:35 PM   #2
Math Team
 
Joined: Nov 2014
From: Australia

Posts: 689
Thanks: 244

I'm going to use the numbers that are on the test.

6: What would you do with $x^3 + 1$?
7: Remember that a polynomial can only have positive integer powers of $x$.
11: Consider the cases $x<-3$, $-3<x<-1$, $-1<x<2$ and $x>2$ seperately.
13: You know a parabola always has a turning point, but does it have to cross the $x$-axis?
3: Use the factor theorem.
4: The root at -2 looks like it might be a triple root, as does the one at 3. The one at 5 looks like just a single one. Maybe this graph has an equation something like $y = \pm (x + 2)^3(x - 3)^3(x - 5)$.
5: I don't know exactly what this is asking. Maybe you need to find $\displaystyle \lim_{x\to\infty}2^x$?
Azzajazz is offline  
July 31st, 2015, 05:05 PM   #3
Member
 
Joined: Sep 2014
From: Toronto

Posts: 43
Thanks: 0

Quote:
Originally Posted by Azzajazz View Post
I'm going to use the numbers that are on the test.

6: What would you do with $x^3 + 1$?
7: Remember that a polynomial can only have positive integer powers of $x$.
11: Consider the cases $x<-3$, $-3<x<-1$, $-1<x<2$ and $x>2$ seperately.
13: You know a parabola always has a turning point, but does it have to cross the $x$-axis?
3: Use the factor theorem.
4: The root at -2 looks like it might be a triple root, as does the one at 3. The one at 5 looks like just a single one. Maybe this graph has an equation something like $y = \pm (x + 2)^3(x - 3)^3(x - 5)$.
5: I don't know exactly what this is asking. Maybe you need to find $\displaystyle \lim_{x\to\infty}2^x$?
6. I don't know.
7. How does that help me exactly?
11. Huh?
3. Ok got that.
4. Ok got that.
5. Ok got that.
Zery is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
polynomial, questions



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Polynomial divisible by Polynomial Nienna426 Number Theory 4 April 18th, 2015 08:14 PM
Rewrite polynomial*2x as a sum of polynomial king.oslo Algebra 6 August 27th, 2013 06:11 AM
Two Polynomial Questions tiba Algebra 2 June 20th, 2012 01:07 PM
Divide polynomial without using polynomial identity condemath Algebra 3 September 20th, 2011 08:34 PM
polynomial omni Calculus 2 November 6th, 2010 01:42 AM





Copyright © 2019 My Math Forum. All rights reserved.