Square Root Method with Imaginary Numbers

If the value of the discriminant is negative, the roots are ___________________.

• Real and equal

• Real and unequal

• Irrational

• Imaginary

Tags

CCSS.HSA-REI.B.4B

x² + 36 = 0

• x = ±6

• x = 6i

• x = -6

• x = ±6i

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve by taking the square root: -9k² = 225

• 4i

• 4, -4

• 25i, -25i

• -5i, 5i

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:

2b² - 4 = -166

• b = 9i, b = -9i

• b = 3, b = -3

• b = 9, b = -9

• b = 3i, b = -3i

Tags

CCSS.HSA-REI.B.4B

√-4

• -2

• -2i

• 4

• 2i

• -2

• 2

• 2i

• No solution

Simplify 2√-32

• 2i√32

• 4i√2

• 8i√2

• -16i√2

• 7

• -7

• 7i

• -7i

What is the square root of -1?

• 1

• i

• -1

• 0

Tags

CCSS.HSN.CN.A.1

• 8

• 8i

• -8i