Question

Please solve this question

Answer 1

Step-by-step explanation:

(a+b)^3= a^3+b^3+3ab×(a+b)

a=px and b=2z

(px)^3+(2z)^3+3×px×2z(px+2z)

px^3+8z^3+6pxz(px+2z)

px^3+8z^3+6p^2x^2z+12pxz^2