document.write( "Question 193726: z^2/ z-3 - z/z+3\r
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\n" ); document.write( "\n" ); document.write( "answer: z3 + 2z^2 + 3z/ (z-3) (z+3)\r
\n" ); document.write( "\n" ); document.write( "anyone can give me a full break down on why the answer is z3 +2z^2 +3z
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Algebra.Com's Answer #145398 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"%28z%5E2%29%2F%28z-3%29+-+z%2F%28z%2B3%29\" Start with the given expression.\r
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\n" ); document.write( "\n" ); document.write( "Take note that the LCD is \"%28z-3%29%28z%2B3%29\". Note: in this case, you simply multiply ALL of the denominators to get the LCD.\r
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\n" ); document.write( "\n" ); document.write( "\"%28z%5E2%28z%2B3%29%29%2F%28%28z-3%29%28z%2B3%29%29+-+z%2F%28z%2B3%29\" Multiply the first fraction by \"%28z%2B3%29%2F%28z%2B3%29\" to get the first denominator equal to the LCD\r
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\n" ); document.write( "\n" ); document.write( "\"%28z%5E3%2B3z%5E2%29%2F%28%28z-3%29%28z%2B3%29%29+-+z%2F%28z%2B3%29\" Distribute\r
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\n" ); document.write( "\n" ); document.write( " Multiply the second fraction by \"%28z-3%29%2F%28z-3%29\" to get the second denominator equal to the LCD\r
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\n" ); document.write( "\n" ); document.write( "\"%28z%5E3%2B3z%5E2-+%28z%5E2-3z%29%29%2F%28%28z-3%29%28z%2B3%29%29\" Now that the fractions are equal, combine the fractions.\r
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\n" ); document.write( "\n" ); document.write( "\"%28z%5E3%2B3z%5E2-+z%5E2%2B3z%29%2F%28%28z-3%29%28z%2B3%29%29\" Distribute\r
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\n" ); document.write( "\n" ); document.write( "\"%28z%5E3%2B2z%5E2%2B3z%29%2F%28%28z-3%29%28z%2B3%29%29\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "So where \"z%3C%3E-3\" or \"z%3C%3E3\"
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