document.write( "Question 273112: solve: 2n(2n+4)=6n^2+9n\r
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Algebra.Com's Answer #199556 by persian52(161) You can put this solution on YOUR website! 2n(2n+4)=6n^(2)+9n\r \n" ); document.write( "\n" ); document.write( "Multiply 2n by each term inside the parentheses. \n" ); document.write( "(4n^(2)+8n)=6n^(2)+9n\r \n" ); document.write( "\n" ); document.write( "Remove the parentheses around the expression 4n^(2)+8n. \n" ); document.write( "4n^(2)+8n=6n^(2)+9n\r \n" ); document.write( "\n" ); document.write( "Move all terms not containing n to the right-hand side of the equation. \n" ); document.write( "4n^(2)+8n-6n^(2)-9n=0\r \n" ); document.write( "\n" ); document.write( "Since 4n^(2) and -6n^(2) are like terms, add -6n^(2) to 4n^(2) to get -2n^(2). \n" ); document.write( "-2n^(2)+8n-9n=0\r \n" ); document.write( "\n" ); document.write( "Since 8n and -9n are like terms, add -9n to 8n to get -n. \n" ); document.write( "-2n^(2)-n=0\r \n" ); document.write( "\n" ); document.write( "Multiply each term in the equation by -1. \n" ); document.write( "2n^(2)+n=0\r \n" ); document.write( "\n" ); document.write( "Factor out the GCF of n from each term in the polynomial. \n" ); document.write( "n(2n)+n(1)=0\r \n" ); document.write( "\n" ); document.write( "Factor out the GCF of n from 2n^(2)+n. \n" ); document.write( "n(2n+1)=0\r \n" ); document.write( "\n" ); document.write( "Set the single term factor on the left-hand side of the equation equal to 0. \n" ); document.write( "n=0\r \n" ); document.write( "\n" ); document.write( "Set each of the factors of the left-hand side of the equation equal to 0. \n" ); document.write( "2n+1=0\r \n" ); document.write( "\n" ); document.write( "Since 1 does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 1 from both sides. \n" ); document.write( "2n=-1\r \n" ); document.write( "\n" ); document.write( "Divide each term in the equation by 2. \n" ); document.write( "(2n)/(2)=-(1)/(2)\r \n" ); document.write( "\n" ); document.write( "Simplify the left-hand side of the equation by canceling the common terms. \n" ); document.write( "n=-(1)/(2)\r \n" ); document.write( "\n" ); document.write( "The complete solution is the set of the individual solutions. \n" ); document.write( "n=0,-(1)/(2) \n" ); document.write( " |