Question

Factorise xcube plus 27y cube plus 8z cube minus 18 xyz

Answer 1

Step-by-step explanation:

(x)3 +27y3+8z3-18xyz

(x)3+(3y)3+(2z)3-3*x*3y*2z)

(x+3y+2z)(x2+9y2+4z2-x*3y-3y*2z-2z*x)

(x+3y+2z)(x2+9y2+4z2-3xy-6yz-2xz)