Simplifying Radicals with Imaginary Numbers

What does i² =  ?

• 1

• -1

• √-1

• √1

Tags

CCSS.HSN.CN.A.1

• -√28

• -2i√7

• 2i√7

• 28i

• -√23

• 23i

• 23

• i√23

• 3i√5

• -3i√5

• -i√45

• 45i

• 6i

• 36

• 2

• 2i

• 3i

• 6

• -6

Tags

AII.9-12.4.F

Solve.   x² = √-36

• x = ± 6

• x = 6i

• x = ± 6i

• x = i√6

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve    x² = √-25

• x = -5

• x = ± 5i

• x = √5

• x = ± 5

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve.   x² = √-40

• x = 4i√10

• x = ± 2√10

• x = ± 2i√10

• x = ± 10i√2

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve.  x² = √-45

• x = ± 3√5

• x = 9i√5

• x = ± 9√5

• x = ± 3i√5

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve.   x² = √-90

• x = 3√10

• x = 9i√10

• x = ± 3√10

• x = ± 3i√10

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7