Solving quadratics with Complex solutions

How many solutions should a quadratic equation have based on its degree?

• 1
• 2
• 3
• 4

Tags

CCSS.HSA.REI.B.4

Match the following

• -7

• 10

• 10i

• 6i

• 12i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

What are the zeros of the function f(x) = x² + 64?
(a)  

• -8i and 8i
• -8 and 8
• (-√8) i and (√8) i
• -√8  and √8

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSN.CN.A.1

CCSS.HSN.CN.C.7

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

What are the zeros of the function f(x) = x² + 64?

(a)  

• -8i and 8i
• -8 and 8
• -i√8 and i√8
• -√8 and √8

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

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: 

• 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

How confident are you in solving quadratic equations on a scale of 1-4?

• 1- I am struggling

• 2- I can sometimes do this

• 3- I can do this

• 4- I can teach someone else

Tags

CCSS.HSA-REI.B.4B