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The value of x and y satisfy the equation tan^2(x + y) + cot^2(x + y) = 1 – 2x – x^2, then the value of x^2 – 3x + 2 is ___________.

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The value of x and y satisfy the equation tan2(x + y) + cot2(x + y) = 1 – 2x – x2, then the value of x2 – 3x + 2 is ___________.

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1 Answer

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by (53.6k points)

Correct answer is 6.

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