factorise X cube -81 z
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Answer:
Step-by-step explanation:
{x}^{3} + 8 {y}^{3} + {z}^{3} - 6xyzx
3
+8y
3
+z
3
−6xyz
{x}^{3} + {(2y)}^{3} + {z}^{3} - 3x.(2y).zx
3
+(2y)
3
+z
3
−3x.(2y).z
(x + y + z)( {x}^{2} + {y }^{2} + {z}^{2} - 4xy - 2xz - 4yz)(x+y+z)(x
2
+y
2
+z
2
−4xy−2xz−4yz)
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