Solve Quadratics using Square Roots

In order to solve a quadratic using square roots, which term must be missing?

• a-term

• b-term

• c-term

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

x² = 49

• x² = ±7

• x² = ±49

• x = ±7

• x = ±49

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

x² = 64

• x² = ± 8

• x² = ± 64

• x = ± 8

• x = ± 64

Tags

CCSS.HSA-REI.B.4B

To solve by taking the square root, what would you do first?

4x² = 100

• multiply by 4

• divide by 4

• add 4

• subtract 4

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

4x² = 100

To solve by taking the square root, what would you do first?

x² - 4 = 77

• add 4

• subtract 4

• multiply by 4

• divide by 4

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

x² - 4 = 77

Solve by taking square roots:
a² + 9 = 9

• a² = 0

• a = 0
• a² = 9

• a = ±3

Tags

CCSS.HSA-REI.B.4B

To isolate the x² term takes two steps. What would be your SECOND step?
5x² - 4 = 41

• add 4

• subtract 4

• divide by 5

• multiply by 5

Tags

CCSS.8.EE.A.2

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

• b² = ±9

• b = ±9

• b² = ±3

• b = ±3

Tags

CCSS.HSA-REI.B.4B