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What is the missing constant term in the perfect square that starts with x^(2)-4x ?

What is the missing constant term in the perfect square that starts with x2−4xx^{2}-4x ?

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Q. What is the missing constant term in the perfect square that starts with x2−4xx^{2}-4x ?
  1. Question Prompt: question_prompt: What is the missing constant term that completes the square for the expression x2−4xx^2 - 4x?\newlineTo complete the square for the expression x2−4xx^2 - 4x, we need to find a constant term to add to the expression so that it becomes a perfect square trinomial. The constant term is found by taking half of the coefficient of xx, which is −4-4, and then squaring it.\newlineCalculation: (−4/2)2=(−2)2=4(-4/2)^2 = (-2)^2 = 4

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