What is (2i+5)+(4i-7) ?

The solution to (2i+5)+(4i-7) is -2+6i

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simplify (2i+5)+(4i-7)

simplify

(2 i + 5) + (4 i - 7)

- 2 + 6 i

Solution steps

(2 i + 5) + (4 i - 7)

Rewrite

2 i + 5

in standard complex form:

5 + 2 i

Rewrite

4 i - 7

in standard complex form:

- 7 + 4 i

= 5 + 2 i + - 7 + 4 i

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

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

= (5 - 7) + (2 + 4) i

Simplify

(5 - 7) + (2 + 4) i : - 2 + 6 i

= - 2 + 6 i

\frac{3 x ^{2}}{x ^{2} - x - 30} - \frac{3 x + 5}{x - 6}

(2.22)^{3}

\frac{1}{2} lo g_{2} (\frac{1}{2})

(2 a - 3 b) (4 a^{2} + 6 ab + 9 b^{2})

2 + 22