document.write( "Question 268742: How do you solve 5x^2-9x+1=x^2-14x+7? \n" ); document.write( "
Algebra.Com's Answer #196923 by persian52(161)![]() ![]() You can put this solution on YOUR website! 5x^(2)-9x+1=x^(2)-14x+7\r \n" ); document.write( "\n" ); document.write( "Move all terms not containing x to the right-hand side of the equation. \n" ); document.write( "5x^(2)-9x+1-x^(2)+14x=7\r \n" ); document.write( "\n" ); document.write( "Since 5x^(2) and -x^(2) are like terms, add -x^(2) to 5x^(2) to get 4x^(2). \n" ); document.write( "4x^(2)-9x+1+14x=7\r \n" ); document.write( "\n" ); document.write( "Since -9x and 14x are like terms, subtract 14x from -9x to get 5x. \n" ); document.write( "4x^(2)+5x+1=7\r \n" ); document.write( "\n" ); document.write( "To set the left-hand side of the equation equal to 0, move all the expressions to the left-hand side. \n" ); document.write( "4x^(2)+5x-6=0\r \n" ); document.write( "\n" ); document.write( "Find the factors such that the product of the factors is the trinomial 4x^(2)+5x-6. This can be done by trial and error and checked using the FOIL method of simplifying polynomials. \n" ); document.write( "(x+2)(4x-3)=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( "x+2=0_4x-3=0\r \n" ); document.write( "\n" ); document.write( "Since 2 does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 2 from both sides. \n" ); document.write( "x=-2_4x-3=0\r \n" ); document.write( " \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( "x=-2_4x-3=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Since -3 does not contain the variable to solve for, move it to the right-hand side of the equation by adding 3 to both sides. \n" ); document.write( "x=-2_4x=3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Divide each term in the equation by 4. \n" ); document.write( "x=-2_(4x)/(4)=(3)/(4)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify the left-hand side of the equation by canceling the common terms. \n" ); document.write( "x=-2_x=(3)/(4)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The complete solution is the set of the individual solutions. \n" ); document.write( "x=-2,(3)/(4) \n" ); document.write( " |