document.write( "Question 203742: Simplify: (-x^2y^5)^4 (-x^2 y^4)^5 \n" ); document.write( "
Algebra.Com's Answer #153751 by RAY100(1637)\"\" \"About 
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(-1x^2y^5)^4 * (-1x^2y^4)^5
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\n" ); document.write( "x^8y^20 * -1 * x^10y^20
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\n" ); document.write( " ( -x^18 y^40)
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\n" ); document.write( "check, let x=1,,y=2,,,,,in both original and snswer,,-2^40,,,ok
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