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​The value of x3y2, if x= 3, y= -3 will be 
  • a)
    729
  • b)
    81
  • c)
    343
  • d)
    243
Correct answer is option 'D'. Can you explain this answer?
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​The value of x3y2, if x= 3, y= -3 will bea)729b)81c)343d)243Cor...
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​The value of x3y2, if x= 3, y= -3 will bea)729b)81c)343d)243Cor...
As,
x= 3 and y= -3,

substitute x in x cube and y in y square
We get,

=>x cube= 3 cube= 27 and y square= 9(negative square numbers have always positive squares)

Therefore,  x cube * y square= 27 * 9= 243


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