document.write( "Question 604245: explain the squareroot of 180 minus the squareroot of 5 \n" ); document.write( "
Algebra.Com's Answer #381036 by bucky(2189)![]() ![]() ![]() You can put this solution on YOUR website! The problem you are given is to simplify: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Begin by factoring the 180. Since this problem has the goal of teaching you something about simplifying radicals, you can assume the likelihood that 5 is a good factor to try and that somehow the square root of 5 will be involved in both terms of the expression you are given. So factoring 5 from 180 results in the two term expression becoming: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "But, by the rules of radicals, the first term can now become the product of the radicals of the two factors and the expression is then: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Next, note that the square root of 36 is 6. Substituting 6 for the square root of 36 results in: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "Then note that the square root of 5 is a common factor of both terms. If you factor it from both of the terms you get the distributed multiplication: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "and in the parentheses you can subtract 1 from 6 to get 5. Substituting this 5 for (6 - 1) gives the answer: \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "And this is a step-by-step method of solving the given problem. \n" ); document.write( ". \n" ); document.write( "I hope this helps you to understand some procedures you can use when working with radicals to simplify algebraic expressions. \n" ); document.write( ". \n" ); document.write( " |