document.write( "Question 346719: Find all solutions of the equation x^2+2x+7=0 and express them in the form a+bi \n" ); document.write( "

Algebra.Com's Answer #248037 by nyc_function(2741) $\"\"$ $\"About$

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0 = x^2 + 2x + 7\r
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\n" ); document.write( "\n" ); document.write( "Use the quadratic formula:\r
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\n" ); document.write( "\n" ); document.write( "x = [ -b ą √ ( (b)˛ - 4(a)(c) ) ] / 2(a) \r
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\n" ); document.write( "\n" ); document.write( "x = [ -2 ą √ ( (2)˛ - 4(1)(7) ) ] / 2(1) \r
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\n" ); document.write( "\n" ); document.write( "x = [ -2 ą √ ( 4 - 28 ) ] / 2\r
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\n" ); document.write( "\n" ); document.write( "x = [ -2 ą √ (- 24 ) ] / 2\r
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\n" ); document.write( "\n" ); document.write( "x = [ -2 ą 2 √6 i ] / 2\r
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\n" ); document.write( "\n" ); document.write( "x = [ -1 ą √6 i ]\r
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\n" ); document.write( "\n" ); document.write( "x = { -1 - √6 i, -1 + √6 i }
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