document.write( "Question 250239: change the fraction w-3 over w+5 into an equivalent fraction with the denominator w^2+w-20 \n" ); document.write( "
Algebra.Com's Answer #185382 by Greenfinch(383)\"\" \"About 
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(W-3)/(W+5) is the start. The denominator is changed to W^2 + W -20
\n" ); document.write( "This factorises to (W + 5)(W - 4), so we need to multiply the numerator by (W -4)
\n" ); document.write( "as well.
\n" ); document.write( "(w - 3)(w - 4)= w^2 -7w + 12
\n" ); document.write( "So equivalent is (W^2 - 7W + 12)/(W^2 + W - 20)
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