Question

factorise : x^3 - 27y^3 - 9xy - 1​

Answer 1

Answer:

(x-2y-1)(x²+4y²+2xy-2y+x+1)

Step-by-step explanation:

x³-27y³-9xy-1

(x)³+(-3y)³+(-1)³-3×x×(-3y)×(-1)

(x-2y-1)(x²+4y²+2xy-2y+x+1)