document.write( "Question 42317: x^3-27 over 5x^2+15x+45\r
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Algebra.Com's Answer #27512 by tutorcecilia(2152)\"\" \"About 
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Apply the follow the rule for finding the difference of two cubes:
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\n" ); document.write( "x^3 - a^3
\n" ); document.write( "= (x)^3 - (a)^3
\n" ); document.write( "= (x-a)(x^2 + ax + a^2)
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\n" ); document.write( "x^3 - 27
\n" ); document.write( "= (x)^3 - (3)^3
\n" ); document.write( "=(x-3)(x^2 + 3x + 3^2)
\n" ); document.write( "= (x-3)(x^2 + 3x + 9)
\n" ); document.write( "Multiply the factors to check your answer.\r
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