Question

plzz help me give answer of 7 no​

Answer 1

Answer:

Here is your answer

Answer 2

Answer:

Step-by-step explanation:

8x3 + y3 + 27z3 – 18xyz

= (2x)3 + y3 + (3z)3 – 3(2x)(y)(3z)

It is in the form of a3 + b3 + c3 – 3abc

(a + b + c)(a2 + b2 + c2 – ab – bc – ca)

Hence, (2x)3 + y3 + (3z)3 – 3(2x)(y)(3z)

(2x + y + 3z)[(2x)2 + y2 +(3z)2 – (2x)y – y(3z) – (3z)x]

                                                             

(2x + y + 3z)[4x2 + y2 + 9z2 – 2xy – 3yz – 3zx]