document.write( "Question 481617: Nakim simplified 3 times the square root of 2x plus x times the square root of 8x minus 5 times the square root of 18x and got -10x times the square root of 2x for an answer.\r
\n" );
document.write( "\n" );
document.write( "Part 1: Using complete sentences, explain what Nakim did wrong.\r
\n" );
document.write( "\n" );
document.write( "Part 2: Show all your work to simplify the expression.\r
\n" );
document.write( "\n" );
document.write( "(You can use \"sqrt()\" to show a square root. For example, 7 times the square root of a can be written as 7sqrt(a). ) \n" );
document.write( "
Algebra.Com's Answer #329764 by Theo(13342)![]() ![]() You can put this solution on YOUR website! original expression is: \n" ); document.write( "3*sqrt(2x) + x*sqrt(8x) - 5*sqrt(18x becomes: \n" ); document.write( "3*sqrt(2x) + 2x*sqrt(2x) - 15*sqrt(2x). \n" ); document.write( "you can factor out the sqrt(2x) to get: \n" ); document.write( "sqrt(2x) * (3 + 2x - 15) which results in: \n" ); document.write( "sqrt(2x) * (-12 + 2x) \n" ); document.write( "the answer given was sqrt(2x) * (-10x) \n" ); document.write( "looks like nakim combined 3 + 2x - 15 to get -10x. \n" ); document.write( "the 3 and the -15 could be combined because they're like terms. \n" ); document.write( "the 2x could not be combined because it was different from them. it included an x in the term which the others did not have. \n" ); document.write( "a + a = 2a because they are like terms. \n" ); document.write( "a + b = a + b because they are not like terms. \n" ); document.write( " |