Answer:
A
Explanation:
given
16x² + 16xy + 4y²
an expression factorised as a perfect square has the form
(ax + by)²
= a²x² + 2abxy + b²y²
16x² + 16xy + 4y² ← is in this form
with a² = 16 , b² = 4
so a =
= 4 and b =
= 2
then 2ab = 2(4)(2) = 16
Thus
16x² + 16xy + 4y² = (4x + 2y)² ← in factorised form