What is (2-i)-(-4+8i) ?

The solution to (2-i)-(-4+8i) is 6-9i

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simplify (2-i)-(-4+8i)

simplify

(2 - i) - (- 4 + 8 i)

6 - 9 i

Solution steps

(2 - i) - (- 4 + 8 i)

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

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

= (2 - (- 4)) + (- 1 - 8) i

Simplify

(2 - (- 4)) + (- 1 - 8) i : 6 - 9 i

= 6 - 9 i

g (- 3)

\frac{cos ( x )}{1 - tan ( x )} + \frac{sin ( x )}{1 - cot ( x )}

2 x \cdot x

(x + 2)^{2} + 1

- 12 \div 2