(1)(4-5i)(5-i) (2)(1-3i)²

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(1)(4-5i)(5-i) (2)(1-3i)²
(1)(4-5i)(5-i) (2)(1-3i)²

(1)(4-5i)(5-i) (2)(1-3i)²

(1)原式=20-4i-25i-5
=15-29i
(2)原式=1-9-6i
=-8-6i