does the following form
$$E|\beta+\alpha Z_{t}^{2}-2\alpha\delta+\alpha\delta^{2}|^{4}$$ means $$E(|\beta+\alpha Z_{t}^{2}-2\alpha\delta+\alpha\delta^{2}|^{4})$$ or $$(E|\beta+\alpha Z_{t}^{2}-2\alpha\delta+\alpha\delta^{2}|)^{4}$$?
2026-04-07 00:23:37.1775521417
Expectation of an absolute form to the power of 4.
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