document.write( "Question 551045: Two no. Are like that if they are added the product is 56 and when they 2 no. Are added with their squares the sum is 128 \n" ); document.write( "
Algebra.Com's Answer #359334 by ankor@dixie-net.com(22740) You can put this solution on YOUR website! Two no. Are like that if they are added the product is 56 and when they 2 no. Are added with their squares the sum is 128 \n" ); document.write( ": \n" ); document.write( "I think you mean \"When two numbers are multiplied the product is 56\" and \n" ); document.write( "When the squares are added the sum is 128 \n" ); document.write( ": \n" ); document.write( "Let the two number be a & b \n" ); document.write( ": \n" ); document.write( "when multiplied: a*b = 56 \n" ); document.write( "When squares added: a^2 * b^2 = 128 \n" ); document.write( "we can rearrange this to \n" ); document.write( "b^2 = 128 - a^2 \n" ); document.write( "b = \n" ); document.write( "then from the 1st equation \n" ); document.write( "a* \n" ); document.write( "square both sides \n" ); document.write( "a^2(128-a^2) = 3136 \n" ); document.write( "128a^2 - a^4 = 3176 \n" ); document.write( "0 = a^4 - 128a^2 + 3136 \n" ); document.write( "Using the quadratic formula we get two solutions \n" ); document.write( "a^2 = 33 \n" ); document.write( "a = \n" ); document.write( "a = 5.746 \n" ); document.write( "and \n" ); document.write( "a^2 = 95 \n" ); document.write( "a = \n" ); document.write( "a = 9.746 \n" ); document.write( ": \n" ); document.write( "a = 5.746, then b = 9.746 \n" ); document.write( "a = 9.746, then b = 5.746 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check this in the original problem \n" ); document.write( "5.746 * 9.746 = 56.00 \n" ); document.write( "and \n" ); document.write( "5.746^2 + 9.746^2 = 128.00 \n" ); document.write( " |