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ICSE Class 9 Answered

KINDLY ADVISE SOLUTIONS TO THESE TWO PROBLEMS SOON:
 
1)(3x27 raised n+1+9x3 raised to 3n-1)
    8x3 rasied to3n-5x27 rasied to n
 
 
2) If  a=x  raised to m+n X y raised to l ;b=x raised to n+ l X y raised to m and c=x raised to l+m X y raised to n.
Prove that :a raised to m-n X b raised to n-l X c raised to l-m=1
Asked by elizabeth.tudu | 21 Oct, 2014, 09:13: PM
answered-by-expert Expert Answer
left parenthesis i right parenthesis space fraction numerator 3 cross times 27 to the power of n plus 1 end exponent plus 9 cross times 3 to the power of 3 n minus 1 end exponent over denominator 8 cross times 3 to the power of 3 n minus 5 end exponent plus 27 to the power of n end fraction equals fraction numerator 3 cross times 27 to the power of n cross times 27 plus 9 cross times begin display style 27 to the power of n over 3 end style over denominator 8 cross times begin display style 27 to the power of n over 243 end style plus 27 to the power of n end fraction equals fraction numerator 3 cross times 27 plus begin display style 3 end style over denominator begin display style 8 over 243 end style plus 1 end fraction equals fraction numerator 84 cross times 243 over denominator 251 end fraction left parenthesis i i right parenthesis space P l e a s e space r e p o s t space t h e space s e c o n d space q u e s t i o n space c o r r e c t l y.
Answered by Prasenjit Paul | 22 Oct, 2014, 11:02: AM

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