document.write( "Question 1039518: a^2 +b^2 +2b +4a +5=0, then the value of
\n" ); document.write( " $\"%28a-b%29%2F%28a%2Bb%29\"$ is _____. Explain clearly\r
\n" ); document.write( "\n" ); document.write( "a) 3
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\n" ); document.write( "c)1/3
\n" ); document.write( "d)-1/3 \n" ); document.write( "

Algebra.Com's Answer #654352 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "a^2 +b^2 +2b +4a +5=0, then the value of
\n" ); document.write( " $\"%28a-b%29%2F%28a%2Bb%29\"$ is _____. Explain clearly\r
\n" ); document.write( "\n" ); document.write( "a) 3
\n" ); document.write( "b) -3
\n" ); document.write( "c)1/3
\n" ); document.write( "d)-1/3
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document.write( "If  = , then (complete the squares (!) )\r\n" );
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document.write( " = ,\r\n" );
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document.write( "which implies a = -2, b = -1  (if the sum of two squares of real numbers is zero, then both addends are zeros).\r\n" );
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document.write( "Having this, calculate the rest.\r\n" );
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