Answer
$46$
Work Step by Step
$$x^{2}-3(x-y)$$ for $x=8$ and $y=2$
substitute 8 for each x and 2 for each y $$8^{2}-3(8-2)$$ complete any grouped operations first $$8^{2}-3(6)$$ next complete all exponents $$64-3(6)$$ then any division or multiplication in order left to right $$64-18$$ finally any addition or subtraction in order left to right $$46$$
