Question: Hi, I'm not sure the correct answer is 4 or 0, the answer given by the question is 4 but when I use Microsoft maths

Hi, I'm not sure the correct answer is 4 or 0, the answer given by the question is 4 but when I use Microsoft maths or other app, the answer is 0, can anyone explain it and how come like that with solutions and explanations

Hi, I'm not sure the correct answer is 4 or 0, the

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