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• The length of the square plot in which roses are planted is 2 meters greater than the length of the square plot in which marigolds are planted. How much bigger in area is the rose plot than the marigold plot?
  
• What is the slope of the line normal to the tangent line of #f(x) = cscx+cos^2(5x-pi) # at # x= (11pi)/8 #?