document.write( "Question 1087714: find two numbers such that one number is 5 greater than the other number. If the sum of their squares is 5 times the square of half the smaller number, what are the numbers? \n" ); document.write( "
Algebra.Com's Answer #702010 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! find two numbers; a & b \n" ); document.write( " such that one number is 5 greater than the other number. \n" ); document.write( "a = b + 5 \n" ); document.write( " If the sum of their squares is 5 times the square of half the smaller number, \n" ); document.write( "a^2 + b^2 = 5(.5b)^2 \n" ); document.write( ": \n" ); document.write( " what are the numbers? \n" ); document.write( "Replace a with (b+5) in the above equation \n" ); document.write( "(b+5)^2 = 5(.5b)^2 \n" ); document.write( "b^2 + 10b + 25 + b^2 = 5*.25b^2 \n" ); document.write( "2b^2 + 10b + 25 = 1.25b^2 \n" ); document.write( "2b^2 - 1.25b^2 + 10b + 25 = 0 \n" ); document.write( ".75b^2 + 10b + 25 = 0 \n" ); document.write( "I got an integer solution \n" ); document.write( "b = -10 \n" ); document.write( "then \n" ); document.write( "a = -10 + 5 \n" ); document.write( "a = -5 \n" ); document.write( ": \n" ); document.write( "The two numbers are -5 and -10 \n" ); document.write( ": \n" ); document.write( "; \n" ); document.write( "See if that checks out \n" ); document.write( "-5^2 + -10^2 = 5(.5(-10))^2 \n" ); document.write( "25 + 100 = 5(.25(100)) \n" ); document.write( "125 = 5(25) \n" ); document.write( " |