}-3 x^2 y-4^2(3-x) x=-2 y=-3

## Step 1: Substitute the values of x and y### Substitute and into the expression .## Step 2: Simplify the expression### Evaluate the exponent and the expression inside the parenthesis: .## Step 3: Perform the multiplications### Multiply the numbers: .## Step 4: Calculate the final result### Subtract the numbers: .