document.write( "Question 57429: 19. simplify
\n" ); document.write( "(mn^2)^-3\r
\n" ); document.write( "\n" ); document.write( "36. (2a^2y^-4z^-5)^3\r
\n" ); document.write( "\n" ); document.write( "73. multiply and divide and write scientific notation for the result.
\n" ); document.write( "(5.2*10^5)(6.5*10^-2) \n" ); document.write( "
Algebra.Com's Answer #39183 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
19. simplify
\n" ); document.write( "(mn^2)^-3
\n" ); document.write( "=(m^3n^6)^(-1)
\n" ); document.write( "=1/[m^3n^6)
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\n" ); document.write( "36. (2a^2y^-4z^-5)^3
\n" ); document.write( "This follows the form (a-b)^3=a^3-3a^2b+3ab^2-b^3
\n" ); document.write( "where a=2a^2y^-4
\n" ); document.write( "and b=4z^-5
\n" ); document.write( "=(2a^2y^-4)^3-3(2a^2y^-4)^2(4z^-5)+3(2a^2y^-4)(4z^-5)^2-(4z^-5)^3
\n" ); document.write( "This is a mess; I'll let you simplify it.
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\n" ); document.write( "73. multiply and divide and write scientific notation for the result.
\n" ); document.write( "(5.2*10^5)(6.5*10^-2)
\n" ); document.write( "=5.2*6.5*10^3
\n" ); document.write( "=33.8*10^3
\n" ); document.write( "=3.28*10^4
\n" ); document.write( "Cheers,\r
\n" ); document.write( "\n" ); document.write( "Stan H.
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