Quadratics and Complex Numbers

(5 - 3i ) ( 5 + 3i )

• 34

• 42

• 25

• 16

Tags

CCSS.HSN.CN.C.8

√(-64 + -36)

• 6i

• 10i

• 12i

• 8i

x² -9x +18 = 0 Use the Quadratic Formula to solve the equation:

• x = 0, x = 9

• x = 4, x = 2

• x = 5, x = 1

• x = 6, x = 3

Tags

CCSS.HSA-REI.B.4B

What is the standard quadratic form for the graph and table shown ?

• y = x² + 4x + 3

• y = (x + 2)² -1

• y = (x + 3) (x + 1)

Solve x² - 5x + 10 = 0

• (5 - i√15)/2  ,  (5 + i√15)/2

• (5 - √15)/2  ,  (5 + √15)/2

• (5 - i√65)/2  ,  (5 + i√65)/2

• (5 - √65)/2  ,  (5 + √65)/2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve for x:

3x² - 6x + 6 = 0

• x = 1± i

• x = 3, -6

• x = 4.8, 2.7

• Undefined

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Which is a solution to (½)x² + 8 = 0

• - 4i

• 16i

• - 16i

• 1

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve x²+64 = 0

• 8

• -8, 8

• 8i, -8i

• -8

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve -2x² + 4x = 9

• (2 - i√14)/2   ,   (2 + i√14)/2

• (2 - i√-56)/2   ,   (2 + i√-56)/2

• (2 - i√-14)/2   ,   (2 + i√-14)/2

• (2 - √14)/2   ,   (2 + √14)/2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

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