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A gardener wants to create a rectangular garden with length of 8x - 4y ft. and width of 5x + 9y ft. What is an algebraic expression for the area of the garden?

  • math -

    (8x-4y)*(5x+9y)=5x*8x-5x*4y+9y*8x-9y*4y=

    40x^2-20xy+72xy-36y^2=

    40x^2+52xy-36y^2

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