Question

1. Write the sum or difference in the standard form a + bi. (2 points)
( 4 - 2i) + ( 9 + 6i)
a) 13 - 4i
b) 13 + 4i
c) -13 - 4i
d) -5 + 8i
2. Write the product in standard form. (2 points)
( 7 + 7i)( 6 + 7i)
a) -7 + 91i
b) 49i2 + 91i + 42
c) 91 - 7i
d) -7 - 91i
3. Find the product of the complex number and its conjugate. (2 points)
3 + 3i
a) 18
b) 9 - 9i
c) 0
d) 9 + 9i
4. Write the expression in standard form. (2 points)
three divided by quantity three minus twelve i. a) - one divided by seventeen. + four divided by seventeen. i
b) one divided by seventeen. - four divided by seventeen. i
c) - one divided by seventeen. - four divided by seventeen. i
d) one divided by seventeen. + four divided by seventeen. i
5. Find the real numbers x and y that make the equation true. (2 points)
-3 + yi = x + 6i

Answer 1

Answer:

2] a] -7+91i

Step-by-step explanation:

2.( 7 + 7i)( 6 + 7i)

42 + 49i + 42i + 49i^2...(i^2 = -1)

49i^2 + 91i + 42....Answer B

-49 + 91i + 42

in a + bi form becomes:

a] -7 + 91i