Express the complex numbers in the form of a + ib:

$3 (7 + i 7) + i (7 + i 7)$

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Solution

$3 (7 + i 7) + i (7 + i 7)$ $= 21 + 21 i + 7 i + 7 i^{2} = 21 + 28 i - 7 = 14 + 28 i$

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Similar questions

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

a + i b

a + i b :

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

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

a + i b :

[(\frac{1}{3} + i \frac{7}{3}) + (4 + i \frac{1}{3})] - (- \frac{4}{3} + i)

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