(x-2y) ^3 expand it
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Answer:
(a+b)^3=a^3+b^3-3ab(a-b)
So,
(x-2y)^3=x^3+(2y)^3-6xy(x-2y)
Verified answer
[tex] {(x - 2y)}^{3} \\ = {x}^{3} - 3(x) {}^{2} (2y) + 3(x)( {2y)}^{2} - {(2y)}^{3} \\ = {x}^{3} - {3x}^{2} \times 2y + 3x \times {4y}^{2} - {8y}^{3} \\ = {x}^{3} - 6 {x}^{2} y +12x {y}^{2} - 8 {y}^{3} [/tex]
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