document.write( "Question 72011: can you please help me solve this? Identify the excluded values for each expression
\n" ); document.write( "(7a^3b^2)/((21a^2b - 49ab)
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Algebra.Com's Answer #51487 by Earlsdon(6294) $\"\"$ $\"About$

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Identify the excluded values for:
\n" ); document.write( " $\"7a%5E3b%5E2%2F%2821a%5E2b-49ab%29\"$
\n" ); document.write( "The excluded values for a and b are those values which would make the denominator = 0
\n" ); document.write( "It sometimes helps to simplify the expression first:
\n" ); document.write( " $\"7ab%28a%5E2b%29%2F7ab%283a-7%29\"$
\n" ); document.write( "Now you can see that if a or b = 0, then the denominator would be = 0, so a = 0 and b = 0 are excluded values...but wait...there may be more.
\n" ); document.write( "Looking at the factor in the denominator (3a-7) you can see that if a were = 7/3, then (3(7/3) - 7) = 0, so a = 7/3 is an excluded value.
\n" ); document.write( "So you have the excluded values:
\n" ); document.write( "a = 0 or 7/3 and
\n" ); document.write( "b = 0 \n" ); document.write( "

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