Let a⃗=−2i⃗+2j⃗\displaystyle \vec{{a}}=-{2}\vec{{{i}}}+{2}\vec{{{j}}} and b⃗=−4i⃗−3j⃗\displaystyle \vec{{b}}=-{4}\vec{{{i}}}-{3}\vec{{{j}}}. Find a⃗⋅b⃗\displaystyle \vec{{a}}\cdot\vec{{b}}
 

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