document.write( "Question 1161088: x^2-8/9x=64/81 by completing the square, what do you add to both sides of the equation? \n" ); document.write( "

Algebra.Com's Answer #784534 by MathLover1(20849) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"x%5E2-%288%2F9%29x=64%2F81\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2-%288%2F9%29x%2Bb%5E2=64%2F81%2Bb%5E2\"$ .......to completing the square you add $\"b%5E2\"$ to both sides\r
\n" ); document.write( "\n" ); document.write( "where $\"b=%288%2F9%29%2F2=4%2F9\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2-%288%2F9%29x%2B%284%2F9%29%5E2=64%2F81%2B%284%2F9%29%5E2\"$ .........you adding $\"%284%2F9%29%5E2=16%2F81\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28x-4%2F9%29%5E2=64%2F81%2B16%2F81\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28x-4%2F9%29%5E2=80%2F81\"$ \r
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