factorise x³-27(X+y)³
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12:16
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x²³-27 (x+y) ³
x3 - 27 [ (x)³ + (y) ³ + 3xy (X+Y) 27 [x³ + y ²³ + 3x²y + 3xy²
+3
27x3+274
³ + 81x²y + 8lxy ²
x 3-27 v ²34 81x²4 +274 ²³7 814²2 x3 - 27x²(x + 3y) + 2√y ² (y + 3x) AL
=o
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