document.write( "Question 102279: decide all values of b in the following equations that will
\n" ); document.write( "give one or more real number solutions.
\n" ); document.write( "(a) 3x^2 + bx - 3 = 0
\n" ); document.write( "(b) 5x^2 + bx + 1 = 0
\n" ); document.write( "(c) -3x^2 + bx - 3 = 0
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Algebra.Com's Answer #74331 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
In the standard form
\n" ); document.write( "\"ax%5E2+%2Bbx+%2Bc+=+0++\"
\n" ); document.write( "the roots are:\"x=-b+%2B-+sqrt+%28b%5E2+-4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29\"
\n" ); document.write( "if
\n" ); document.write( "\"%28b%5E2-4ac%29%3E=+0\"
\n" ); document.write( " then the roots are \"real\". Otherwise, the roots are \"imaginary\" \r
\n" ); document.write( "\n" ); document.write( "So
\n" ); document.write( "(a) \"%28b%5E2+-+4%2A3%2A3%29%3E=+0\"
\n" ); document.write( " \"+b%5E2+%3E=36\"
\n" ); document.write( " \"+b%3E=+6+\" the roots are \"real\" for any vale of \"b+%3E=+6\"\r
\n" ); document.write( "\n" ); document.write( "(b) \"%28b%5E2+-+4%2A5%2A1%29%3E=+0\"
\n" ); document.write( " \"b%5E2+%3E=%284%2A5%29\"
\n" ); document.write( " \"b+%3E=+sqrt%284%2A5%29\"
\n" ); document.write( " \"b+%3E=+2%2A+sqrt%285%29\" the roots are \"real\"for any vale of \"b+%3E=+2%2A+sqrt+%285%29\"\r
\n" ); document.write( "\n" ); document.write( "(c) \"%28b%5E2+-+%284%2A-3%2A-3%29%29%3E=+0\"
\n" ); document.write( " \"b%5E2+%3E=+36\"
\n" ); document.write( " \"b+%3E=+sqrt+%2836%29\"
\n" ); document.write( " \"b+%3E=++6\" the roots are \"real\" for any value of \"b+%3E=+6\"\r
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