document.write( "Question 39964: Help with this one please!\r
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document.write( "sqrt2y+7 + 4 = y\r
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document.write( "I think I have to start by isolating the y to one side - is that right, and then do I subtract the 4 from both sides to cancel it out on the left?
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document.write( "Please show me how to figure this!\r
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Algebra.Com's Answer #25362 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! sqrt(2y+7) + 4 = y \n" ); document.write( "sqrt(2y+7)=y-4 \n" ); document.write( "Square both sides to get: \n" ); document.write( "2y+7=y^2-8y+16 \n" ); document.write( "y^2-10y+9=0 \n" ); document.write( "(y-9(y-1)=0 \n" ); document.write( "y=9 or y=1 \n" ); document.write( "Check the answers in the original equation. \n" ); document.write( "y=1 is extraneous. \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |