document.write( "Question 1128512: How to complete square method of 3x^2 +6x=12 \n" ); document.write( "
Algebra.Com's Answer #744989 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "How to complete square method of 3x^2 +6x=12
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\"matrix%281%2C3%2C+3x%5E2+%2B+6x%2C+%22=%22%2C+12%29\"
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document.write( "\"matrix%281%2C3%2C+3x%5E2%2F3+%2B+%286%2F3%29x%2C+%22=%22%2C+12%2F3%29\" ----- Dividing by 3 to make LEADING COEFFICIENT, + 1.
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document.write( "\"matrix%281%2C3%2C+x%5E2+%2B+2x%2C+%22=%22%2C+4%29\" 
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document.write( " ------ Taking \"1%2F2\" of \"b,\" SQUARING it, and then ADDING the result to both sides
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document.write( "\"matrix%281%2C3%2C+x%5E2+%2B+2x+%2B+%281%29%5E2%2C+%22=%22%2C+4+%2B+%281%29%5E2%29\"
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document.write( "\"matrix%281%2C3%2C+%28x+%2B+1%29%5E2%2C+%22=%22%2C+5%29\"
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document.write( "\"matrix%281%2C3%2C+sqrt%28%28x+%2B+1%29%5E2%29%2C+%22=%22%2C+%22+%22%2B-+sqrt%285%29%29%29\" ----- Taking square root of both sides
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document.write( "\"matrix%281%2C3%2C+x+%2B+1%2C+%22=%22%2C+%22+%22%2B-+sqrt%285%29%29\"
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document.write( "\"highlight_green%28matrix%281%2C3%2C+x%2C+%22=%22%2C+%22+%22%2B-+sqrt%285%29+-+1%29%29\"
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document.write( "You can calculate that if you need APPROXIMATE solutions. \n" );
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