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2. Express the following in standard form : A. B. C. D.
A. A
B. B
C. C
D. D
3. Find the real numbers x and y such that : (x + iy)(3 + 2i) = 1 + i A. B. C. D.
A. A
B. B
C. C
D. D
4. Express the following in standard form : (2 - √3i) (2 + √3i) + 2 - 4i
A. 3 + 4i
B. 4i
C. 9 - 4i
D. 13 + 4i
5. Find the reciprocal (or multiplicative inverse) of -2 + 5i A. B. C. D.
A. A
B. B
C. C
D. D
7. Write in the simplest form: (i)-997
A. -i
B. 1
C. -1
D. i
13. For a complex number a+ib, a-ib is called its
A. opposite
B. conjugate
C. reciprocal
D. additive inverse
15. The multiplicative inverse of 3 - 4i is
A. (3 + 4i)/25
B. 3 + 4i
C. -3 + 4i/5
D. -3 + 4i
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