document.write( "Question 62238: I need help on how to add and subtract polynomials. I get confused on what sign I will use on the equation like in x+2y-7-3x-4y+8 Iam not sure what sign to use in this problem please help me and please include a hint or tip on adding and subtracting polynomials \n" ); document.write( "
Algebra.Com's Answer #42983 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! x+2y-7-3x-4y+8 \n" ); document.write( "Write the x terms then the y terms, then the number terms, as follows: \n" ); document.write( "x-3x + 2y-4y -7-8 \n" ); document.write( "The x terms: one to the right then three to the left leaves you at -2x \n" ); document.write( "The y terms: two to the right then 4 to the left leaves you at -2y \n" ); document.write( "The numbers: seven to the left then eight to the left leaves you at -15 \n" ); document.write( "SOLUTION: \n" ); document.write( "-2x-2y-15 \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |