Step-by-step explanation:
Identity used :
[tex] \bold{ ({y}^{2} + {z}^{2}) = {y}^{2} + 2yz + {z}^{2} }[/tex]
[tex] \implies \: {(2y)}^{2} - 2.2y.3z + {(3z)}^{2} [/tex]
so we got :
y = 2
z = 3
[tex]{ \pink{ \bold{ \boxed{answer = (2y + 3z) {}^{2} }}}}[/tex]
