Question

factorise x^3 - 9x^2y + 27xy^2 - 27y^3

Answer 1

Step-by-step explanation:

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Answer 2

( x - 3y )^3

Step-by-step explanation:

The equation can be written as:

$x^{3}$ -27 $y^{3}$ - 9x^2y + 27xy^2

= $x^{3}$ - $(3y)^{3}$ - 3*$x^{2}$(3y) + 3* x*$(3y)^{2}$  {a^3 - 3a^2b + 3a^2b - b^3}

=( x - 3y )^3