What is the answer to a+bi=-9+4i ?

The answer to a+bi=-9+4i is a=-9,b=4

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a+bi=-9+4i

a + bi = - 9 + 4 i

a = - 9, b = 4

Solution steps

a + bi = - 9 + 4 i

Complex numbers can be equal only if their real and imaginary parts are equalRewrite as system of equations:

[a = - 9 b = 4]

[a = - 9 b = 4] : a = - 9, b = 4

a = - 9, b = 4

a + ib = 1 - (a - ib) + 3 i

\frac{z - 1}{1 + z} = i + 1

x + i y = ∣ x - y i ∣

(1 + i) z^{2} = - 1 + 7

(x + i y)^{2} + (1 + 4 i) (x + i y) = 5 + i