document.write( "Question 374629: how do you solve this system by substitution then how the solution would be graph? thanks.
\n" ); document.write( "y=x^3+x^2+x
\n" ); document.write( "y=-3x \n" ); document.write( "
Algebra.Com's Answer #266470 by edjones(8007)\"\" \"About 
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y=x^3+x^2+x
\n" ); document.write( "y=-3x
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\n" ); document.write( "x^3+x^2+x=-3x
\n" ); document.write( "x^3+x^2+4x=0
\n" ); document.write( "x(x^2+x+4)=0
\n" ); document.write( "x=0
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\n" ); document.write( "x^2+x+4=0
\n" ); document.write( "x^2+x =-4
\n" ); document.write( "x^2+x+ 1/4=-4+ 1/4 Complting the square.
\n" ); document.write( "(x + 1/2)^2= -15/4
\n" ); document.write( "x + 1/2 = +-sqrt(-15)/2
\n" ); document.write( "x=-1/2 +- sqrt(15)i /2
\n" ); document.write( "x=(-1+sqrt(15)i)/2, x=(-1-sqrt(15)i)/2, x=0
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\n" ); document.write( "Ed\r
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