Quadratic Formula with I

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 -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

If b²-4ac is negative, the quadratic equation has:

• Two real solutions that are different

• Two imaginary solutions that are different

• One real solution

• One imaginary solution

Tags

CCSS.HSA-REI.B.4B

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

• -8 and 8

• -8i and 8i

• (-√8) i and (√8) i

• -√8  and √8

Fill in quadratic formula

j

h

d

2a

-2a

b^2

b

a^2

-b

-b^2-4ac

b^2-4ac

b^2+4ac

4ac-b^2

Tags

CCSS.HSA-REI.B.4B

Fill in quadratic formula

j

h

d

-b^2-4ac

-b

b

a^2

b^2

b²-4ac

-2a

4ac-b^2

b^2+4ac

2a

Tags

CCSS.MATH.CONTENT.HSN.CN.C.7

CCSS.MATH.CONTENT.HSA.SSE.A.1.b

Tags

CCSS.HSA-REI.B.4B

Will the following equation have an IMAGINARY answer
11x²-9x+3=0

• yes

• no

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

If the discriminant equals -72, the quadratic has how many solutions?

• 2 real

• 2 complex

• 1 real

• 1 complex

• 0 real

Tags

CCSS.HSA-REI.B.4B

Solve using the quadratic formula. f(x) = 2x²- 4x + 7

• (2±2i√10)/2

• (4±√40)/4

• (2±i√10)√/2

• (2±2i√40)/4

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7