Verified Answer :

naǫ

\(36x-8y^2 \hbox{ when } x=3 \hbox{ and } y=-6 \\ \\ 36 \times 3 -8 \times (-6)^2=3 \times 36 - 8 \times 36=(3-8) \times 36= -5 \times 36=\\ =\boxed{-180}\)

\((36x-8y)^{2}\)

\([36(3)-8(-6)]^2\)

\((108+48)^2\)

\(156 ^{2}\)

\(=24336\)

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