document.write( "Question 248484: Find three consecutive positive even whole numbers such that the sum of the square of the two smaller numbers is 20 more than the square of the largest number? \n" ); document.write( "
Algebra.Com's Answer #181126 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! Let x, x+2 & x+4 be the 3 numbers. \n" ); document.write( "x^2+(x+2)^2=(x+4)^2+20 \n" ); document.write( "x^2+x^2+4x+4=x^2+8x+16+20 \n" ); document.write( "2x^2+4x+4-x^2-8x-36=0 \n" ); document.write( "x^2-4x-32=0 \n" ); document.write( "(x-8)(x+4)=0 \n" ); document.write( "x-8=0 \n" ); document.write( "x=8 ans. for the smallest number. \n" ); document.write( "8+2=10 ans. for the middle number. \n" ); document.write( "8+4=12 ans. for the laegest number. \n" ); document.write( "Proof: \n" ); document.write( "8^2+10^2=12^2+20 \n" ); document.write( "64+100=144+20 \n" ); document.write( "164=164 \n" ); document.write( " |