Answer
4u$^2$+4uv+v$^2$
Work Step by Step
(A+B)$^2$=A$^2$+2AB+B$^2$
(2u+v)$^2$
(2u)$^2$+(2)(2u)(v)+(v)$^2$
4u$^2$+4uv+v$^2$
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