Question

factorise : 125x³ +8y²+z³-30xyz​

Answer 1

Answer:

= ( 5X  +  2Y + Z) ( 25X^2 + 4Y^2 + Z^2 - 10XY  -2YZ  - 5ZX )

Step-by-step explanation:

USING IDENTITY A^3 + B^3 +C^3 - 3ABC

= ( A +B +C ) ( A^2 + B^2 + C^2 - AB - BC - CA)

= ( 5X  +  2Y + Z) ( 25X^2 + 4Y^2 + Z^2 - 10XY  -2YZ  - 5ZX )

Answer 2

$125 {x}3 + 8 {y2 + z3} - 30xyz \\ using \: identity \: x3 + y3 + z3 - 3xyz \\ 5x3 + 2y2 + z3 - 3(5x)(2y)(z) \\ (5x)3 + (2y)2$

hence this is the answer