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3 years ago

Simplify this expression below as much as possible. (7+4i)+(9+5i)-(2+5i)

Mathematics

2 answers:

gtnhenbr [62]3 years ago

7 0

Answer:

7+4i+9+5i-2-5i

7+4i+9-2

4i+7+9-2

4i+14

anzhelika [568]3 years ago

4 0

Answer: 14 + 4i

Step-by-step explanation:

(7 + 4i) + (9 + 5i) - (2 + 5i)

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

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

(7 + 9 - 2) + (4 + 5 - 5)i

7+9-2=14 and 4+5-5=4

Therefore, (7+4i)+(9+5i)-(2+5i) is equal to 14 + 4i

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