ALG 2 TEST SECTIONS 2.5 - 2.6

Express  $\sqrt{-300}$  in terms of  $i$  

•  $10\sqrt{3}$  

•  $i\sqrt{300}$  

•  $10i\sqrt{3}$  

•  $-\sqrt{300}$  

Tags

CCSS.HSN.CN.A.1

Solve the equation $3x^2+96=0$  

•  $\pm4\sqrt{2}$  

•  $\pm4i\sqrt{2}$  

•  $2i\sqrt{4}$  

•  $\pm2\sqrt{4}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve the equation $x^2+8x+20=0$  

•  $-4\pm2i$  

•  $2i\pm4$  

•  $-2\pm4i$  

•  $3\pm2i$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Find the complex conjugate of $1-i\sqrt{2}$  

•  $i\sqrt{2}+1$  

•  $1+i\sqrt{2}$  

•  $2+i\sqrt{1}$  

•  $1+\sqrt{2}$  

A real number is an imaginary number

• Always true

• Never True

• Sometimes true

• Just true

Tags

CCSS.HSN.CN.A.1

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

Tags

CCSS.HSN.CN.A.1

The complex conjugate of 4 + 3i is

• 3 + 4i

• 3 - 4i

• 4 - 3i

• 4 + 3i

Tags

CCSS.HSN.CN.A.3

A solution of the equation  $2x^2+3x+2=0$  

•  $-\frac{3}{4}+\frac{1}{4}i\sqrt{7}$  

•  $-\frac{3}{4}+\frac{1}{4}i$  

•  $-\frac{3}{4}+\frac{1}{4}\sqrt{7}$  

•  $\frac{1}{2}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve for x:

• x = {-3+2i, -3-2i}
• x = {7, 6}
• x = 2±i√3
• No solution

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve for x: x² - 5x + 8 = 0

• x = (-5±i√7)/2
• x = (5±i√7)/2
• x = (8±i√7)/2
• x = (5±√57)/2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7