What is (-9+2i)-(-12+4i) ?

The solution to (-9+2i)-(-12+4i) is 3-2i

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simplify (-9+2i)-(-12+4i)

simplify

(- 9 + 2 i) - (- 12 + 4 i)

3 - 2 i

Solution steps

(- 9 + 2 i) - (- 12 + 4 i)

Group the real part and the imaginary part of the complex number

(a + bi) - (c + d i) = (a - c) + (b - d) i

= (- 9 - (- 12)) + (2 - 4) i

Simplify

(- 9 - (- 12)) + (2 - 4) i : 3 - 2 i

= 3 - 2 i

3 x^{2} y - 2 x^{2} y + 6 x^{2} y + x^{3}

\frac{7}{8} m + \frac{9}{10} - 2 m - \frac{3}{5}

\frac{( 1 + 2 i )}{( 3 + 4 i )}

3 \cdot 180

3 x^{2} + 2 x - 8