document.write( "Question 622189: Someone help me figure out this problem please my teacher wants to know x1 and x 2 how do i find them and what are day please give me some steps\r
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document.write( "Solve the equation x^2 - 8 x - 20=0 by completing the square. \n" );
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Algebra.Com's Answer #391187 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! x^2 - 8x - 20=0 \n" ); document.write( "x^2 - 8x = 20 \n" ); document.write( "take half 'b', square it, and add to both sides: \n" ); document.write( "x^2 - 8x + 16 = 20 + 16 \n" ); document.write( "(x-4)(x-4) = 36 \n" ); document.write( "(x-4)^2 = 36 \n" ); document.write( "take the square root of both sides: \n" ); document.write( "x-4 = +-6 \n" ); document.write( "x = 4+-6 \n" ); document.write( "x = {-2, 10} \n" ); document.write( " \n" ); document.write( " |