document.write( "Question 356912: Solving Equations with Radicas and Exponents
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document.write( "Find all real solutions to this equation.\r
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document.write( "√(x+4)-2√(x-1)=-1 \n" );
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Algebra.Com's Answer #254929 by edjones(8007)![]() ![]() You can put this solution on YOUR website! √(x+4)-2√(x-1)=-1 \n" ); document.write( "5x-(4sqrt(x-1)(sqrt(x+4))=1 square each side \n" ); document.write( "(-4sqrt(x-1)(sqrt(x+4))=1-5x \n" ); document.write( "16x^2+48x-64=25x^2-10x+1 square each side \n" ); document.write( "9x^2-58x+65=0 \n" ); document.write( "(x-5)(9x-13)=0 \n" ); document.write( "x=13/9, x=5 \n" ); document.write( "x=5 is the only answer. \n" ); document.write( "x=13/9 is extraneous. \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |