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For i=sqrt(-1), what is the sum of (5+2i...

For `i=sqrt(-1)`, what is the sum of `(5+2i)+(-7+30i)`?

A

`-2-i`

B

`-2+5i`

C

`12-i`

D

`12+5i`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Fir i=sqrt(-1) , what is the sum (7+3i)+(-8+9i) ?

    A
    `-1+12i`
    B
    `-1-6i`
    C
    `15+12i`
    D
    `15-6i`

  • For i=sqrt(-1) , what is the result of subtracting (2+4i) from (-5+6i) ?

    A
    `-7+2i`
    B
    `-3-10i`
    C
    `3+2i`
    D
    `7-10i`

  • If i=sqrt(-1) , what is the product of (4+7i) and ((1)/(2)-2i) ?

    A
    `16-(9)/(2)i`
    B
    `14+(9)/(2)i`
    C
    `2-8i-14i^(2)`
    D
    `i(8+(9)/(2))`

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    Given that i = sqrt(-1), what is the sum of the complex numbers (21 i^(2) -12i) + (3-5i) ?

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    (7 +i)/(8-i) If the expression above is expressed in the form a +bi, where I = sqrt(-1, what is the value of b ?

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    For i=sqrt(-1) , which of the following complex number is equivalent to (10i+4i^2)-(7-3i) ?

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