Solving Quadratic Equations (3-Ways)

 x² - 81 = 0

• x = 11, -11
• x =±9
• x = 7, -7
• x=±9i

Solve
(x-5)² = 25

• ±i0
• ±10
• 10, 0
• -10, 0

Solve for the values of x:

(2x - 1)(x + 4) = 0

• x=1/2, x= -4

• x=1/2, x= 4

• x= 1, x=-4

• x=-2.5, x=4

Find the zeros:

• no real solutions

Simplify:

4√75

• 4√5

• 12√5

• 20√3

• 7√3

Solve: (2x - 1)² = 49

• 7 and - 7

• 3 and -4

• 4 and -3

• no real solutions

x² - 17x + 16 = 0

• x = 16, x = 1

• x = -16, x = 1

• x = 16, x = -1

• x = -16, x = -1

x² + 14x + 49 = 0

• x = 7

• x = 7, x = -7

• x = -7, x = -7

• x = -7

5x² - 65x - 150 = 0

• x = 15, x = 2

• x = 15, x = -2

• x = -15, x = 2

• x = -15, x = -2