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Please give a thorough explanation of the steps to solve this as this is a practice question for my midterm tomorrow, and I have gotten

Please give a thorough explanation of the steps to solve this as this is a practice question for my midterm tomorrow, and I have gotten six different answers so far. I do not understand what I am doing right or wrong. FindtherootsoftheARpolynomialfor

X_t=.25X_t₁+0.75X_t₂+e_t.

Usetherootstocheckforweakstationarity.

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