document.write( "Question 1143084: 3^x=27^a+b and a^2-b^2/(a-b)=5. What is X
\n" ); document.write( "A)6
\n" ); document.write( "B)9
\n" ); document.write( "C)12
\n" ); document.write( "D15 \n" ); document.write( "

Algebra.Com's Answer #763859 by greenestamps(13200) $\"\"$ $\"About$

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\n" ); document.write( "Use parentheses where required! Don't make us correct your statement of the problem.

\n" ); document.write( "27^(a+b) ( $\"27%5E%28a%2Bb%29\"$ ); not 27^a+b ( $\"27%5Ea%2Bb\"$ )
\n" ); document.write( "(a^2-b^2)/(a-b) ( $\"%28a%5E2-b%5E2%29%2F%28a-b%29\"$ ); not a^2-b^2/(a-b) ( $\"a%5E2-b%5E2%2F%28a-b%29\"$ )

\n" ); document.write( "So

\n" ); document.write( " $\"3%5Ex+=+27%5E%28a%2Bb%29\"$
\n" ); document.write( " $\"%28a%5E2-b%5E2%29%2F%28a-b%29+=+5\"$

\n" ); document.write( "The division in the second equation gives you the value of (a+b).

\n" ); document.write( "27^(a+b) is (3^3)^(a+b) = 3^(3(a+b)) = 3^x, so x = 3(a+b); and you know what (a+b) is.

\n" ); document.write( "You should get answer D.... \n" ); document.write( "

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