Solve Quadratic with Complex

Solve for x: 

• x = {-4, -1}

• x = {-1, -4}

• x = {2+i, 2-i}

• x = {-2+i, -2-i}

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

Solve for x: x² - 3x + 10 = 0

• x = -3±i√31

• x = (3±√49)/2

• x = 5, -2

• x = (3±i√31)/2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Hint: set equation = to 0.

• A

• B

• C

• D

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve: 3x² = -12

• x = -4, 4

• x = 2, -2

• x = 2i, -2i

• x = 4i, -4i

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve by taking square roots:

-3b² - 4 = 26

• k = ±2i√30

• k = ±i√30

• k = ±2i√10

• k = ±i√10

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots.

x² = -121

• ± 11

• ± 11i

• ± 12

• 11i

Tags

CCSS.HSA-REI.B.4B