Solving Square Roots

If the discriminant is negative, you will have....

• two real solutions

• two irrational solutions

• two imaginary solutions

• one solution

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots: 5b² + 4 = -41 Hint: what do you do when you have a NEGATIVE square root?

• b = 9i, b = -9i

• b = 3i, b = -3i

• b = 9, b = -9

• b= 3, b= -3

Tags

CCSS.HSA-REI.B.4B

Solve

2y² - 5 = 93

Be careful, work from the outside in, get the squared term by itself, THEN take the square root.

• y = 7

• y = ±7

• y = 24.5

• y = ±24.5

Tags

CCSS.8.EE.A.2

What is the answer to √(-25)?

• no real solution

• 5

• -5

• -5 and 5

Tags

CCSS.8.EE.A.2

√-9 is...

• 81

• -81

• 23

• not possible

True or false: Any expression that includes square roots of negative numbers also results as "undefined" with no solution

• True

• False

• I don't know

Pick which equation I can use square roots to solve:

• 3x² + 2x + 1 = 0

• 3x² -27 = 0

• 3x² + 2x = 1

• 4x + 10 = 0

Tags

CCSS.HSA-REI.B.4B

What is the negative square root of 36?

• 6

• -6

• 18

• no solution

Tags

CCSS.8.EE.A.2

Solve for x:

x² = -25

• No solution

• x = 5

• x = -5

• x = 25

Tags

CCSS.8.EE.A.2