document.write( "Question 974203: Hi, \r
\n" ); document.write( "\n" ); document.write( "Can yo please help me find the domain and range of \"-2x%5E2-4x%2B6\" and where it would be increasing and decreasing.\r
\n" ); document.write( "\n" ); document.write( "I tried solving this over and over but i got the domain of all real numbers and the range of (-infinity,-6] but i don't know if that's right.
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Algebra.Com's Answer #596192 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
Complete the square to put into standard form. You can read everything you need from it.\r
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\n" ); document.write( "\n" ); document.write( "\"-2%28x%5E2%2B2x-3%29\"
\n" ); document.write( "\"-2%28x%5E2%2B2x%2B1-1-3%29\"
\n" ); document.write( "\"-2%28%28x%2B1%29%5E2-4%29\"
\n" ); document.write( "\"-2%28x%2B1%29%5E2%2B8\"\r
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\n" ); document.write( "\n" ); document.write( "The vertex is a maximum value for the expression, at (-1,8).
\n" ); document.write( "The range is ( -infinity, 8].
\n" ); document.write( "Increasing from the left until negative 1; decreasing from negative 1 to the right.
\n" ); document.write( "Saying in interval notation better: Increasing on ( -infin, -1 ); decreasing on ( -1, infinity ).
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