My Math Forum  

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

Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion


Thanks Tree1Thanks
  • 1 Post By skeeter
Reply
 
LinkBack Thread Tools Display Modes
October 19th, 2016, 11:29 AM   #1
Newbie
 
Joined: Oct 2016
From: Minna

Posts: 8
Thanks: 0

Surds

Express 14-8√60÷6√20-10√12 in the form a√b+6√3; where a & b are irrational numbers.
Hezekiah is offline  
 
November 4th, 2016, 05:54 AM   #2
Global Moderator
 
Joined: Dec 2006

Posts: 18,250
Thanks: 1439

This question looks a bit strange. Where did it come from?
skipjack is offline  
November 4th, 2016, 11:14 AM   #3
Senior Member
 
Joined: May 2016
From: USA

Posts: 857
Thanks: 348

Quote:
Originally Posted by Hezekiah View Post
Express 14-8√60÷6√20-10√12 in the form a√b+6√3; where a & b are irrational numbers.
The obvious way to attack this problem, which looks VERY strange as skipjack said, is to set up an equation. What exactly IS the problem anyway? Please be exact.

$a\sqrt{b} + 6\sqrt{3} = \dfrac{14 - 8\sqrt{60}}{6\sqrt{20} - 10\sqrt{12}}\ or$

$a\sqrt{b} + 6\sqrt{3} = 14 - \dfrac{8\sqrt{60}}{6\sqrt{20}} - 10\sqrt{12}?$
JeffM1 is offline  
November 4th, 2016, 11:31 AM   #4
Math Team
 
Joined: Jul 2011
From: Texas

Posts: 2,678
Thanks: 1339

Quote:
Originally Posted by Hezekiah View Post
Express 14-8√60÷6√20-10√12 in the form a√b+6√3; where a & b are irrational numbers.
duplicate post ... asked, answered, and thanked by the OP

Maths Irrational
Thanks from topsquark
skeeter is offline  
November 4th, 2016, 02:36 PM   #5
Global Moderator
 
Joined: Dec 2006

Posts: 18,250
Thanks: 1439

The same question was indeed posted, and an answer was given that assumed missing parentheses as per JeffM1's first expression. Although the desired form of a√b+6√3 wasn't achieved, Hezekiah seemed pleased with the answer given, so we never found out the fully correct version of the question.
skipjack is offline  
November 4th, 2016, 02:51 PM   #6
Math Team
 
topsquark's Avatar
 
Joined: May 2013
From: The Astral plane

Posts: 1,659
Thanks: 652

Math Focus: Wibbly wobbly timey-wimey stuff.
Quote:
Originally Posted by skipjack View Post
The same question was indeed posted, and an answer was given that assumed missing parentheses as per JeffM1's first expression. Although the desired form of a√b+6√3 wasn't achieved, Hezekiah seemed pleased with the answer given, so we never found out the fully correct version of the question.
It was also posted (with full solution) at MHF.

-Dan
topsquark is offline  
Reply

  My Math Forum > High School Math Forum > Elementary Math

Tags
surds



Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Can someone help me with this? - surds Skyeeasson Algebra 5 April 29th, 2015 07:38 PM
Surds Rob158 Elementary Math 2 March 16th, 2014 03:25 AM
Surds gaussrelatz Algebra 3 October 26th, 2011 12:50 AM
Surds(need help) hoyy1kolko Algebra 6 June 5th, 2011 06:16 AM
Surds Help PhenomenalSoldier Algebra 1 February 17th, 2011 08:40 AM





Copyright © 2017 My Math Forum. All rights reserved.