Complex Number-2

(2-3i)² - 2(2-3i) + 9 = ?

• -6i
• 3+2i
• -4i
• 5

If (x+iy)² = 3+4i, then (x,y) is

• (3,-1) and (-2,-1)

• (0,0)
• (2,1) and (-2,-1)
• (1,2)

• cos(nθ) + i*sin(nθ)
• sin(nθ) + i*cos(nθ)
• (cosθ + i*sinθ)/n
• cos(nθ) - i*sin(nθ)

• x = 1.5, y = 3.5
• x = -2, y = -4
• x = 0, y = -2
• x = -1.5, y = -3.5

Modulus of (3+i)(4+i) is

• √130
• √200
• √170
• √150

• 1
• -2
• -1
• 0

• -1/3

• 3/13

• 1.0
• 0.5

(i-i)³ = ?

• -2i
• 3-2i

• 3i+1

• -2-2i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.3