document.write( "Question 451839: How do you solve this equation?
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\n" ); document.write( "\n" ); document.write( "thannkkkks . (: \n" ); document.write( "

Algebra.Com's Answer #310658 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "21x^2 - 6 = 15x 
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document.write( "21x^2 - 15x-6 = 0
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document.write( "factoring
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document.write( "(7x +2)(3x -3) = 0  |  Note:SUM of the outside terms(-21x) and the inside terms(6x) = -15x
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document.write( "check the factoring using the FOIL method of multiplying binomials
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document.write( "F	First terms
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document.write( "O	Outside terms
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document.write( "I	Inside terms
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document.write( "L	Last terms
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document.write( "(7x +2)(3x -3) = 0 
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document.write( "(7x +2)= 0  x = -2/7
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document.write( "(3x -3) = 0  x = 1
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document.write( " x = -2/7,1 \n" );
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