document.write( "Question 83144: I have tried these problems on completing the square and I really do not get them. The instructions say this only:\r
\n" ); document.write( "\n" ); document.write( "Complete the square. Do not solve for x\r
\n" ); document.write( "\n" ); document.write( " $\"x%5E2+%2B10x+%2B+__\"$ and
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\n" ); document.write( "
\n" ); document.write( " $\"x%5E2+-3x+%2B+__\"$ \r
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\n" ); document.write( "\n" ); document.write( "thank you! \n" ); document.write( "

Algebra.Com's Answer #59688 by Mona27(45) $\"\"$ $\"About$

You can put this solution on YOUR website!
To change a normal quadratic into the completed square form, first take half the coefficient of x (10) and place it in a bracket like this:
\n" ); document.write( " $\"%28x%2B5%29%5E2\"$
\n" ); document.write( "Expanding this expression gives:
\n" ); document.write( " $\"x%5E2%2B10x%2B25\"$
\n" ); document.write( "Since we don't need the last term, we eliminate it by subtraction:
\n" ); document.write( " $\"%28x%2B5%29%5E2-25\"$
\n" ); document.write( "and finally you add whatever that last term (a) is:
\n" ); document.write( " $\"%28x%2B5%29%5E2-25%2Ba\"$
\n" ); document.write( "This method applies to the second example even if the coefficient of x is not divisible by 2:
\n" ); document.write( " $\"%28x%2B3%2F2%29%5E2-9%2F4%2Bb\"$ \n" ); document.write( "

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