document.write( "Question 1087722: Solve the quadratic inequality. Write the solution set in interval notation. Show the complete solution.
\n" ); document.write( " 𝑥2+9𝑥+13>−7 \n" ); document.write( "

Algebra.Com's Answer #702018 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Add 7 to both side. You will get an equivalent inequality\r\n" );
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document.write( " > 0.\r\n" );
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document.write( "Factor left side. You will get an equivalent inequality\r\n" );
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document.write( "(x+5)*(x+4) > 0,   or, which is the same  (x-(-5))*(x-(-4)) > 0.\r\n" );
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document.write( "The solution is the set  { x < -5 } U { x > -4 },  or,\r\n" );
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document.write( "in the interval form  (,) U (,).\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "If you want to learn on how to solve quadratic inequalities, read the lesson\r
\n" ); document.write( "\n" ); document.write( " - Solving problems on quadratic inequalities \r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lesson is the part of this online textbook under the topic \"Inequalities\".\r
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