document.write( "Question 246361: Find the x-intercepts of y = x^2+4x \n" ); document.write( "

Algebra.Com's Answer #179951 by oberobic(2304) $\"\"$ $\"About$

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y = x^2 + 4x
\n" ); document.write( "y = x(x+4)
\n" ); document.write( ".
\n" ); document.write( "x=0
\n" ); document.write( "x=-4
\n" ); document.write( ".
\n" ); document.write( "Checking our work...
\n" ); document.write( ".
\n" ); document.write( "y = x^2 + 4x
\n" ); document.write( "x = 0
\n" ); document.write( "y = 0^2 + 4(0) = 0
\n" ); document.write( "OK
\n" ); document.write( ".
\n" ); document.write( "y = x^2 + 4x
\n" ); document.write( "x = -4
\n" ); document.write( "y = (-4)^2 + (4)(-4)
\n" ); document.write( "y = 16 + (-16) = 0
\n" ); document.write( "OK \n" ); document.write( "

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