Question

factorise 8 x cube y cube + 27 Z cube​

Answer 1

Answer:

=(8xycube+9z square)(3+2)

Step-by-step explanation:

1. 8x cube, y cube + 27z cube
2. $a {}^{3} + 2ab + b {}^{3} = (a + b)(a + b)$
3. a=8xy , b=27z
4. 8xy cube+27z cube =(8xy)cube+2(8xy)(27z) +(27z) cube
5. 24xcube y cube +16xy+27z+81z
6. group the common factor
7. 8xycube(3+2) 9z square (3+2)
8. (8xycube+9z square) (3+2)