Question

multiply the following (2+3i)(3+7i)​

Answer 1

Answer:

-15+23i

Step-by-step explanation:

(2+3i)(3+7i)

=>6+14i+9i+21$\i^{2} }$

=>6-21+(14+9)i

=>-15+23i

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Answer 2

Answer:

Formula = i² = -1

(2 + 3i)(3 + 7i)​ = 2 × (3 + 7i)  + 3i × (3 + 7i)

                        = 6 + 14i + 9i + 21i²

                        = 6 + 23i - 21

                        = (-15) + 23i = 23i - 15

∴ ANSWER = 23i - 15

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