document.write( "Question 560958: Without solving the equation or factoring, determine the solution(s) to the
\n" ); document.write( "equation, x2 + 4x − 5 = 0 , using only the graph \n" ); document.write( "

Algebra.Com's Answer #364090 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+x%5E2+%2B+4x+-+5+=+0+\"$
\n" ); document.write( "Here's the plot:
\n" ); document.write( " $\"+graph%28+400%2C+400%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E2+%2B+4x+-+5%29+\"$
\n" ); document.write( "It looks like the roots are
\n" ); document.write( " $\"+x+=+1+\"$ and
\n" ); document.write( " $\"+x+=+-5+\"$
\n" ); document.write( "check answers:
\n" ); document.write( "Rewrite these as:
\n" ); document.write( " $\"+x+-+1+=+0+\"$
\n" ); document.write( " $\"+x+%2B+5+=+0+\"$
\n" ); document.write( "Multiplying:
\n" ); document.write( " $\"+%28+x+-+1+%29%2A%28+x+%2B+5+%29+=+x%5E2+-+x+%2B+5x+-+5+\"$
\n" ); document.write( " $\"+%28+x+-+1+%29%2A%28+x+%2B+5+%29+=+x%5E2+%2B+4x+-+5+\"$
\n" ); document.write( "OK \n" ); document.write( "

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