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PLEASE HELP ASAP!! CORRECT ANSWER ONLY PLEASE!!

Simplify.

(7 − 2i)(8 + 9i)

PLEASE HELP ASAP CORRECT ANSWER ONLY PLEASE Simplify 7 2i8 9i class=

Respuesta :

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  (7 - 2i)(8 + 9i)

= 7(8 + 9i)   +    -2i(8 + 9i)

= 56 + 63i   +   -16i   - 18i²

= 56           + 47i         +18     (NOTE: i² = -1  →  (-18)(-1) = +18)

= 74 + 47i

Answer: 74 + 47i

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