Question

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$(2x + 3y) ^{3} - (2x - 3y)^{3}$
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Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

(2x+3y-2x+3y){(2x+3y)^2+(2x+3y)(2x-3y)+(2x-3y)^2}

=6y(4x^2+12xy+9y^2+4x^2-9y^2+4x^2-12xy+9y^2)

=6y(12x^2+9y^2)

=72x^2y+54y^3