User Name Remember Me? Password

 Algebra Pre-Algebra and Basic Algebra Math Forum

 July 21st, 2017, 10:21 AM #1 Newbie   Joined: Jul 2017 From: Pennsylvania Posts: 1 Thanks: 0 Exponent simplification help needed Below is a problem I did on khan academy, the first thing I did to simplify the problem was square the top and bottom, but in the solution they waited until the very end to take the square root which changed the answer. Was squaring the top and bottom first not the proper way to do it? I'm confused ughhh.jpg July 21st, 2017, 11:26 AM #2 Senior Member   Joined: May 2016 From: USA Posts: 1,310 Thanks: 551 You do realize that the jpg is unreadable. What is the problem, and what did YOU do July 21st, 2017, 11:58 AM #3 Global Moderator   Joined: Dec 2006 Posts: 20,972 Thanks: 2222 $\dfrac{\sqrt{8c^{20}}}{\sqrt{32c^4}} = \dfrac{2\sqrt2c^{10}}{4\sqrt2c^2} = \dfrac{c^8}{2}$ $\dfrac{\sqrt{8c^{20}}}{\sqrt{32c^4}} = \sqrt{\dfrac{8c^{20}}{32c^4}} = \sqrt{\dfrac{c^{16}}{4}} = \dfrac{\sqrt{c^{16}}}{\sqrt4} = \dfrac{c^8}{2}$ July 25th, 2017, 05:05 AM #4 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902 There is no such thing as "the proper way" to do a math problem! Tags exponent, needed, simplification Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post fivestar Calculus 2 September 25th, 2016 09:50 AM Ku5htr1m Calculus 19 September 21st, 2016 09:37 AM Student1 Elementary Math 5 November 22nd, 2014 11:14 AM bml1105 Algebra 12 July 27th, 2014 11:40 AM arron1990 Calculus 1 December 31st, 1969 04:00 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top      