document.write( "Question 155386: I am struggling with Algebra and quadratic equations. I do not understand how to solve the following:\r
\n" ); document.write( "\n" ); document.write( "solve: 3x + x(x-2)= 0
\n" ); document.write( "find the x-incercepts of f(x)=3x + x(x-2).\r
\n" ); document.write( "\n" ); document.write( "The answer is 0, -1 as shown in my text but I do not undertand how to arrive at the intercepts, I get 3x + x^2 -2x = x^2 -x =0? This does not look like a quadratic formula. \n" ); document.write( "

Algebra.Com's Answer #114425 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Solve for x:
\n" ); document.write( " $\"3x%2Bx%28x-2%29+=+0\"$ Simplify the left side by factoring an x.
\n" ); document.write( " $\"x%283%2B%28x-2%29%29+=+0\"$ Simplify.
\n" ); document.write( " $\"x%28x%2B1%29+=+0\"$ Apply the zero product rule: If a*b = 0, the either a =0, or b = 0, or both.
\n" ); document.write( " $\"x+=+0\"$ or $\"x%2B1+=+0\"$ so $\"x+=+-1\"$
\n" ); document.write( "Solution:
\n" ); document.write( " $\"x+=+0\"$ $\"x+=+-1\"$ \n" ); document.write( "

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