document.write( "Question 194618: I actually have five questions. \r
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\n" ); document.write( "\n" ); document.write( "1.) What number should be added to the expression x2 + 4x to change it into a perfect square trinomial?\r
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\n" ); document.write( "\n" ); document.write( "2.) What number should be added to the expression x2 + 12x to change it into a perfect square trinomial?\r
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\n" ); document.write( "\n" ); document.write( "3.)Solve the following equation by transforming it into a perfect square trinomial.\r
\n" ); document.write( "\n" ); document.write( "x2 - 14x = 15\r
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\n" ); document.write( "\n" ); document.write( "4.)Solve the following equation by transforming it into a perfect square trinomial.\r
\n" ); document.write( "\n" ); document.write( "3x2 + 18x = 21\r
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\n" ); document.write( "\n" ); document.write( "5.) Solve the following equation by transforming it into a perfect square trinomial.\r
\n" ); document.write( "\n" ); document.write( "x2 - 2x = 3
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Algebra.Com's Answer #146010 by Mathtut(3670)\"\" \"About 
You can put this solution on YOUR website!
.) What number should be added to the expression x2 + 4x to change it into a perfect square trinomial?
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\n" ); document.write( "take 1/2 of the coefficient of the x term and square it
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\n" ); document.write( "\"x%5E2%2B4x%2Bhighlight%284%29\" 1/2(4)=2 and 2 squared equals 4
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\n" ); document.write( "\n" ); document.write( "2.) What number should be added to the expression x2 + 12x to change it into a perfect square trinomial? 1/2 of 12 =6 and 6 squared is 36
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\n" ); document.write( "\"x%5E2%2B12x%2B36\"
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\n" ); document.write( "\"%28x%2B6%29%5E2\"
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\n" ); document.write( "\n" ); document.write( "3.)Solve the following equation by transforming it into a perfect square trinomial.
\n" ); document.write( "x2 - 14x = 15
\n" ); document.write( "1/2(14)=7 and 7 squared is 49....so if we add 49 inside the parenthesis then we mus subtract 49 outside the parenthesis to keep equation equivilet
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\n" ); document.write( "\"x%5E2-14x%2B49%29-49=15\"
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\n" ); document.write( "\"%28x-7%29%5E2=64\"\r
\n" ); document.write( "\n" ); document.write( "4.)Solve the following equation by transforming it into a perfect square trinomial.
\n" ); document.write( "3x2 + 18x = 21
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\n" ); document.write( "\"3%28x%5E2%2B6x%29=21\" 1/2(6)=3 and 3 squared is 9
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\n" ); document.write( "\"3%28x%5E2%2B6x%2B9%29-27=21\".....notice that instead of creating just 9 we have to multiply this by the 3 outside the parathesis 3(9)=27 so we had to subtract 27 to keep equation equivilent
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\n" ); document.write( "\"3%28x%2B3%29%5E2=48\"\r
\n" ); document.write( "\n" ); document.write( "5) Solve the following equation by transforming it into a perfect square trinomial.
\n" ); document.write( "x2 - 2x = 3
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\n" ); document.write( "take 1/2(2)=1 and 1 squared is 1
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\n" ); document.write( "\"%28x%5E2-2x%2B1%29-1=3\"
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\n" ); document.write( "\"%28x-1%29%5E2=4\"\r
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