kayelise520 kayelise520

23-01-2018
Mathematics

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Simplify the expression shown below.(6+8i)(4-7i)

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HenryLCH HenryLCH

23-01-2018

Simplify the expression shown below.(6+8i)(4-7i)

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Аноним Аноним

23-01-2018

(6+8i)(4-7i)
=6(4-7i) + 8i(4-7i)
= (6)(4)-(6)(7i)+(8i)(4) - (8i)(7i)
= 24 - 42i + 32i - 56i^2
= 24 - 42i + 32i - 56(-1)
= 24 - 42i + 32i + 56
= 24 +56 - 42i + 32i
= 80 - 10i (final answer)

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