document.write( "Question 67900: i need help solving for a
\n" ); document.write( "a^2+4a=45 \n" ); document.write( "

Algebra.Com's Answer #48277 by Earlsdon(6294) $\"\"$ $\"About$

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Solve for a:
\n" ); document.write( " $\"a%5E2+%2B+4a+=+45\"$ Subtract 45 from both sides.
\n" ); document.write( " $\"a%5E2+%2B+4a+-+45+=+0\"$ Solve this quadratic equation by factoring:
\n" ); document.write( " $\"%28a-5%29%28a%2B9%29+=+0\"$ Apply the zero product principle.
\n" ); document.write( " $\"a-5+=+0\"$ and/or $\"a%2B9+=+0\"$
\n" ); document.write( "If $\"a-5+=+0\"$ then $\"a+=+5\"$
\n" ); document.write( "If $\"a%2B9+=+0\"$ then $\"a+=+-9\"$ \r
\n" ); document.write( "\n" ); document.write( "The solutions:
\n" ); document.write( "a = 5
\n" ); document.write( "a = -9 \n" ); document.write( "

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