Solving Complex Numbers

√(-300)

• 10i√3

• 15√15

• -10√3

• 2i√13

A complex number can be expressed as a + bi. What does a represent?

• the real part of the complex number

• the imaginary part of the complex number

• depends on the sign of the number

• the square root of the complex number

• i

• -i

• 1

• -1

Solve
3x² - 5 = -446

• ±√-147

• 7i√3

• ±7i√3

• -7√3

(3i)(-2+4i)

• -6+12i

• -12-6i

• -2+7i

• 12+6i

Calculate:
(4 − 7i) − (-3 + 6i)

• 7 − 13i

• 7 − i 

• 1 − 13i

• 1 − i 

Calculate: 
(1 − 2i) + (-4 + 2i)

• -3

• -3 − 4i

• 5 − 4i

• 5

Calculate (multiply):
 (4 + 3i)(4 − 3i)

• 16 − 9i²

• 25

• 7

• 8 − 6i

Find the conjugate of:
5 + 7i

• 5 − 7i

• -5 − 7i

• -5 + 7i

Find the conjugate of:
-4 − 8i

• -4 + 8i

• 4 − 8i

• 4 + 8i