What is (21+9i)-(13-2i) ?

The solution to (21+9i)-(13-2i) is 8+11i

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simplify (21+9i)-(13-2i)

simplify

(21 + 9 i) - (13 - 2 i)

8 + 11 i

Solution steps

(21 + 9 i) - (13 - 2 i)

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

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

= (21 - 13) + (9 - (- 2)) i

Simplify

(21 - 13) + (9 - (- 2)) i : 8 + 11 i

= 8 + 11 i

\frac{1}{20} + \frac{1}{5}

\frac{\frac{7}{9}}{\frac{4}{3} + \frac{8}{12} \cdot \frac{2}{5}}

3 x^{2} + 8 x

(6 a^{3} b^{2} - 7 a^{2} b^{3} + 4 a b^{5}) (4 a^{5} b^{2})

t^{2} + t - 2