document.write( "Question 202559: Find the indicated products and quotients.\r
\n" ); document.write( "\n" ); document.write( "1. (9z^3/16xy)(4x/27z^3)\r
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\n" ); document.write( "\n" ); document.write( "3. (y^2+3y-10/3y+15) / (10-5y)\r
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Algebra.Com's Answer #152779 by PRMath(133)\"\" \"About 
You can put this solution on YOUR website!
1. (9z^3/16xy)(4x/27z^3)
\n" ); document.write( "2. (3m-9/4m+8)(m^2+5m+6/m^2-9)
\n" ); document.write( "3. (y^2+3y-10/3y+15) / (10-5y) \r
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\n" ); document.write( "\n" ); document.write( "Before we do these, we have to agree that \"4%2F4+=+1\"\r
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\n" ); document.write( "\n" ); document.write( "Further, we have to agree that \"a%5E3%2Fa%5E3+=+1\"\r
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\n" ); document.write( "\n" ); document.write( "Those are good facts to have in your mind, so let's begin.\r
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\n" ); document.write( "\n" ); document.write( "1. (9z^3/16xy)(4x/27z^3)\r
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\n" ); document.write( "\n" ); document.write( "I read this as: \"9z%5E3%2F16xy\"*\"4x%2F27z%5E3\"\r
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\n" ); document.write( "\n" ); document.write( "Because you are multiplying, you can factor terms, just like we did above when we said \"4%2F4=1\"\r
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\n" ); document.write( "\n" ); document.write( "SO - let's factor: \r
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\n" ); document.write( "\n" ); document.write( "The 9 in the numerator can be factored into the 27 of the denominator to give you \"1%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "The 4 in the numerator can be factored into the 16 of the denominator to give you \"1%2F4\"\r
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\n" ); document.write( "\n" ); document.write( "The \"z%5E3\" in the numerator can be factored into the \"z%5E3\" of the denominator to give you \"1%2F1\"\r
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\n" ); document.write( "\n" ); document.write( "The \"x\" in the numerator can be factored into the x of the denominator to again give you \"1%2F1\"\r
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\n" ); document.write( "\n" ); document.write( "What you have left is: \r
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\n" ); document.write( "\n" ); document.write( "\"1%2F4%283%29y\" which is: \"1%2F12y\"\r
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\n" ); document.write( "\n" ); document.write( "2. (3m-9/4m+8)(m^2+5m+6/m^2-9)\r
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\n" ); document.write( "\n" ); document.write( "Let's just break this down piece by piece, because it may be quicker:\r
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\n" ); document.write( "\n" ); document.write( "Numerator of first fraction: 3m - 9
\n" ); document.write( "Let's factor out 3: 3(m-3)\r
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\n" ); document.write( "\n" ); document.write( "Denominator of first fraction: 4m + 8
\n" ); document.write( "Let's factor out 4: 4(m + 2)\r
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\n" ); document.write( "\n" ); document.write( "Numerator of 2nd fraction: \"m%5E2%2B5m%2B6\"
\n" ); document.write( "Let's factor this to be: (m+2)(m+3)\r
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\n" ); document.write( "\n" ); document.write( "Denominator: \"m%5E2+-9%29\"
\n" ); document.write( "Let's factor this to be: (m+3)(m-3)\r
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\n" ); document.write( "\n" ); document.write( "NOW we have: \r
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\n" ); document.write( "\n" ); document.write( "\"3%28m-3%29%28m%2B2%29%28m%2B3%29%2F4%28m%2B2%29%28m%2B3%29%28m-3%29\"\r
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\n" ); document.write( "\n" ); document.write( "NOW factor out \"%28m-3%29%28m%2B2%29%28m%2B3%29%2F%28m%2B2%29%28m%2B3%29%28m-3%29\"\r
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\n" ); document.write( "\n" ); document.write( "What you have left is \"3%2F4\"\r
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\n" ); document.write( "\n" ); document.write( "3.(y^2+3y-10/3y+15) / (10-5y) \r
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\n" ); document.write( "\n" ); document.write( "Numerator of first fraction:\"y%5E2%2B3y-10\"
\n" ); document.write( "Factor to: (y+5)(y-2)\r
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\n" ); document.write( "\n" ); document.write( "Denominator of first fraction:3y+15
\n" ); document.write( "Let's factor that to: 3(y+5)\r
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\n" ); document.write( "\n" ); document.write( "Second fraction: 10-5y
\n" ); document.write( "Factor to: 5(2-y)\r
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\n" ); document.write( "\n" ); document.write( "Now we have: \"%28y%2B5%29%28y-2%295%282-y%29%2F3%28y%2B5%29\"\r
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\n" ); document.write( "\n" ); document.write( "(y+5) can factor out of the numerator and denominator so we have left....\r
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\n" ); document.write( "\n" ); document.write( "\"5%282-y%29%28y-2%29%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "I hope this helps. :-)
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