document.write( "Question 728605: What are the solutions of the equation x^2 – 4 = 0? Use a graph of the related function. \n" ); document.write( "

Algebra.Com's Answer #445519 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2-4+=+0\"$ ....factor it completely\r
\n" ); document.write( "\n" ); document.write( " $\"%28x+-2%29%28x%2B2%29+=+0\"$ \r
\n" ); document.write( "\n" ); document.write( "solutions:\r
\n" ); document.write( "\n" ); document.write( "if $\"x-2+=+0\"$ ..=>... $\"x+=2\"$ \r
\n" ); document.write( "\n" ); document.write( "if $\"x%2B2+=+0\"$ ..=>... $\"x=-2\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"+graph%28+600%2C+600%2C+-5%2C+5%2C+-5%2C+5%2C+x%5E2-4%29+\"$ \n" ); document.write( "

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