Solving Quadratic Equations w/Square Roots

Solve using the square root method:

x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Tags

CCSS.HSA-REI.B.4B

Solve using the square root method:

16a² - 9 = 0

• a = ^-3/₄, ³/₄

• a = ^-4/₃, ⁴/₃

• a = ^-9/₁₆, ⁹/₁₆

• a = ^-16/₉, ¹⁶/₉

Tags

CCSS.HSA-REI.B.4B

Solve using the square root method:

(x + 3)² - 5 = 11

• x = 1 or -7

• x = 1

• No solution

• x = ±4

x² = 81

• 9
• -9
• 40.5
• -9,9

x² = 169

• 13
• -13,13
• -13
• -169

x² = 100

• -10,10
• 10
• -10
• 200

(x + 12)² = 289

• 5

• -29

• -29, 5

• No Solution

25r² = 625

• 25

• -25

• -5, 5

• -25, 25

(3y)² = 36

• 2

• -2

• -9,9

• -3,3

2d² = 8

• 4
• -2
• -4, 4
• -2, 2