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30-03-2022
Mathematics

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Multiply (2 – 7i)(–1 + 4i).

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30-03-2022

Answer is 26+15i

(2-7i) x (-1+4i)
-2+2x4i-7i ( -1) -7i+4i
-2+8i+7i-28i^2
-2+8i+7i-28(-1)
-2+8i+7i+28
26+ 15i

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