document.write( "Question 1061293: I need a sample of how to solve x2+6x-16=0
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Algebra.Com's Answer #676114 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "I need a sample of how to solve x^2 + 6x - 16 = 0
\n" ); document.write( "I need a step by step process, as I do not understand
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document.write( "There is a quadratic formula to solve any quadratic equation of the form\r\n" );
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document.write( "\"ax%5E2+%2B+bx+%2B+c\" = \"0\".\r\n" );
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document.write( "This formula is \r\n" );
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document.write( "\"x%5B1%2C2%5D\" = \"%28-b+%2B-+sqrt%28b%5E2+-+4%2Aa%2Ac%29%29%2F%282%2Aa%29\".\r\n" );
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document.write( "It gives two solutions (two roots) \"x%5B1%5D\" (when you use the sign \"+\" at the square root) and \"x%5B2%5D\" (when you you use the sign \"-\" at the square root).\r\n" );
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document.write( "In your case  a= 1, b= 6 and c= -16.\r\n" );
document.write( "Apply the formula. You will get\r\n" );
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document.write( "\"x%5B1%2C2%5D\" = \"%28-6+%2B-+sqrt%286%5E2+-4%2A1%2A%28-16%29%29%29%2F%282%2A1%29\" = \"%28-6+%2B-+sqrt%2836+%2B+64%29%29%2F2\" = \"%28-6+%2B-+sqrt%28100%29%29%2F2\" = \"%28-6+%2B-+10%29%2F2\".\r\n" );
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document.write( "So, the two roots are: \"x%5B1%5D\" = \"%28-6+%2B+10%29%2F2\" = \"4%2F2\" = 2;\r\n" );
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document.write( "                       \"x%5B2%5D\" = \"%28-6+-+10%29%2F2\" = \"-16%2F2\" = -8.\r\n" );
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document.write( "The solutions of the given equations are 2 and -8.\r\n" );
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\n" ); document.write( "\n" ); document.write( "On solving quadratic equations see the lessons \r
\n" ); document.write( "\n" ); document.write( "    - Introduction into Quadratic Equations\r
\n" ); document.write( "\n" ); document.write( "    - PROOF of quadratic formula by completing the square\r
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\n" ); document.write( "\n" ); document.write( "    - Solving quadratic equations without quadratic formula\r
\n" ); document.write( "\n" ); document.write( "    - Who is who in quadratic equations\r
\n" ); document.write( "\n" ); document.write( "    - Using quadratic equations to solve word problems\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 lessons are the part of this textbook under the topic \"Quadratic equations\". \r
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