document.write( "Question 1088341: Please help me solve this question (6/7x-21)-(1/x^2-6x+9)+(1/x^2-9)=0 \n" ); document.write( "
Algebra.Com's Answer #702611 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "Please help me solve this question (6/7x-21)-(1/x^2-6x+9)+(1/x^2-9)=0
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If it's: \"6%2F%287x+-+21%29+-+1%2F%28x%5E2+-+6x+%2B+9%29+%2B+1%2F%28x%5E2+-+9%29+=+0\", then read on!
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document.write( "\"6%2F7%28x+-+3%29+-+1%2F%28x+-+3%29%5E2+%2B+1%2F%28x+-+3%29%28x+%2B+3%29+=+0\" ------- Factoring DENOMINATORS from left to right
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document.write( "6(x + 3)(x - 3) - 1[7(x + 3)] + 1[7(x - 3) = 0 ------- Multiplying entire equation by LCD, \"7%28x+%2B+3%29%28x+-+3%29%5E2\"
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document.write( "\"6%28x%5E2+-+9%29+-+7x+-+21+%2B+7x+-+21+=+0\"
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document.write( "\"6x%5E2+-+54+-+7x+-+21+%2B+7x+-+21+=+0\"
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document.write( "\"6x%5E2+-+96+=+0\"
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document.write( "\"6%28x%5E2+-+16%29+=+6%280%29\"
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document.write( "\"x%5E2+-+16+=+0\"
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document.write( "\"highlight_green%28matrix%282%2C3%2C+x%2C+%22=%22%2C+-+4%2C+x%2C+%22=%22%2C+4%29%29\" \n" );
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