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Can you check all of these? I already did it and i want to check my answers included picture of my answers.

1. Multiply—- (x-3)^2

(x-3)^2=(x-3)(x-3)=x^2-3x-3x+9=x^2-6x+9

2. Evaluate——-3^-3

3^-3=1/9

3. Evaluate—— -4^2=16

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