f=x^2*y

g=xyz

find fg^2

f=x^2*y

g=xyz
To find fg^2, you substitute each expression and simplify:
f*g^2
=(x²*y) * (xyz)²
=x²*y * x² * y² * z²
=x² * x² * y * y² * z²
=x⁴ * y³ * z²