Question

simplify (2x-5y)^(3)-(2x+5y)^(3)​

Answer 1

Answer:

-10y(12x^2+25y^2)

Step-by-step explanation:

(2x-5y)^3-(2x+5y)^3

=(2x-5y-(2x+5y))x((2x-5y)^2+(2x-5y)x(2x+5y)+(2x+5y)^2

=(2x-5y-2x-5y)x(4x^2-20xy+25y^2+4x^2-25y^2+4x^2+20xy+25y^2)

=(-10y)x(12x^2+25y^2)

=-10y(12x^2+25y^2)

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