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3 years ago

How to multiply this (7 + i)(6 − 7i) ?

Mathematics

2 answers:

Anuta_ua [19.1K]3 years ago

7 0

FOIL

7(6)+7(-7i)+6(i)+i(-7i)

42-49i+6i-7i^2

7i^2-43i+42

nikdorinn [45]3 years ago

4 0

What you need to do is first multiplying by using the Foil method. <u>The foil method is multiplying the terms which occur last in each binomial</u>

Than you combine the real imaginary parts of the expression. so the Answer is

49 - 43i Hope this helps :)

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Step-by-step explanation:

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