=4x²+8xy+12xz+4y²+12yz+9z²
Step-by-step explanation:
Rewrite
(2x+2y+3z)²
as (2x+2y+3z)(2x+2y+3z).(2x+2y+3z)(2x+2y+3z)
Expand (2x+2y+3z)(2x+2y+3z)
by multiplying each term in the first expression by each term in the second expression, then simplify each term.
