document.write( "Question 305294: Please solve.\r
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document.write( "One leg of a right triangle is four less than twice the other.
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document.write( "The hypotenuse is 10. Find the length of each leg. \n" );
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Algebra.Com's Answer #218619 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "One leg of a right triangle is four less than twice the other. \n" ); document.write( "The hypotenuse is 10. Find the length of each leg. \n" ); document.write( ". \n" ); document.write( "Let x = one leg \n" ); document.write( "then \n" ); document.write( "2x-4 = other leg \n" ); document.write( ". \n" ); document.write( "Applying Pythagorean theorem: \n" ); document.write( "x^2 + (2x-4)^2 = 10^2 \n" ); document.write( "x^2 + (2x-4)(2x-4) = 100 \n" ); document.write( "x^2 + 4x^2-8x-8x+16 = 100 \n" ); document.write( "5x^2-16x+16 = 100 \n" ); document.write( "5x^2-16x-84 = 0 \n" ); document.write( "5x^2-30x+14x-84 = 0 \n" ); document.write( "(5x^2-30x)+(14x-84) = 0 \n" ); document.write( "5x(x-6)+14(x-6) = 0 \n" ); document.write( "(x-6)(5x+14) = 0 \n" ); document.write( "x = {-14/5, 6} \n" ); document.write( "Toss out the negative answer leaving: \n" ); document.write( "x = 6 \n" ); document.write( " \n" ); document.write( " |