document.write( "Question 1169062: Solve the system and graph the curves:
\n" );
document.write( " x^2-2x-4y^2+8y-2=0
\n" );
document.write( "5x^2-10x+12y^2+24y-58=0
\n" );
document.write( "_________________________ \n" );
document.write( "
Algebra.Com's Answer #793717 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! If we multiply the 1st equation by 5 and subtract the 2nd from it, we have: \n" ); document.write( "32y^2 - 16y - 48 = 0 \n" ); document.write( "Divide through by 16 and factor: \n" ); document.write( "(2y - 3)(y + 1) = 0 \n" ); document.write( "y = 3/2, y = -1 \n" ); document.write( "Using the 1st equation to solve for x, we get: \n" ); document.write( "x^2 - 2x - 4 - 8 - 2 = 0 \n" ); document.write( "x^2 - 2x - 14 = 0 -> x= -2.8729833 and x= 4.8729833 \n" ); document.write( "x^2 - 2x - 4(3/2)^2 + 8(3/2) - 2 = 0 -> x^2 - 2x + 1 = 0 -> (x-1)(x-1) = 0 \n" ); document.write( "This gives x = 1, multiplicity 2 \n" ); document.write( " \n" ); document.write( " |