Answer
$0$
Work Step by Step
We start with given expression: $4x^2-3xy$
We plug in values for $x$ and $y$: $4(3)^2-3(3)(4)$
We simplify exponents first: $4(9)-3(3)(4)$
We perform multiplication, from left to right: $36-36$
We subtract: $0$
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