document.write( "Question 91724: Need help with this one: Solve by completing the square. Thank you :)\r
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document.write( "x^2-1/2x-3/16=0\r
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document.write( "answer choices:
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document.write( "a. -1/4, 3/4
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document.write( "b. -1/4, 2/3
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document.write( "c. -3/4, 1/4 \n" );
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Algebra.Com's Answer #66618 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Solve by completing the square. \n" ); document.write( ": \n" ); document.write( "x^2 - 1/2x - 3/16 = 0 \n" ); document.write( ": \n" ); document.write( "x^2 - 1/2x + ____ = +3/16 \n" ); document.write( ": \n" ); document.write( "Find the value to complete the square, divide the coefficient of x by 2 & square \n" ); document.write( "it: 1/2 * 1/2 = 1/4; (1/4)^2 = 1/16. Add that to both sides, you have: \n" ); document.write( ": \n" ); document.write( "x^2 - 1/2x + 1/16 = 3/16 + 1/16 \n" ); document.write( ": \n" ); document.write( "(x - 1/4)^2 = 4/16 \n" ); document.write( ": \n" ); document.write( "x - 1/4 = +/-Sqrt(4/16); find the square root of both sids \n" ); document.write( ": \n" ); document.write( "x - 1/4 = +/- 2/4 \n" ); document.write( ": \n" ); document.write( "x = + 1/4 +/-2/4 \n" ); document.write( ": \n" ); document.write( "Two solutions: \n" ); document.write( "x = +1/4 + 2/4 \n" ); document.write( "x = +3/4 \n" ); document.write( "and \n" ); document.write( "x = +1/4 - 2/4 \n" ); document.write( "x = -1/4 \n" ); document.write( ": \n" ); document.write( "did this help you understand \"completing the square\" \n" ); document.write( " |