Quadratic Equations and Square Root Property

Which is the BEST method to use to solve this equation?

3a² = 27

• Square Root Method

• Factor Method

• Complete the Square

• Quadratic Formula

The ________________ of 25 is ±5

• reciprocal

• square root

• integer

• ratio

A curve that is created when you graph a quadratic

• V

• vertical

• parabola

• axis of symmetry

Solve the equation using square roots.
x² = 121

• 60.5

• ± 11

• ± 12

• 11

What are the solutions?

• -2, 1

• 1, 2

• -1,2

• 0,-4

When solving a quadratic equation, when do you use the plus or minus (±) symbol?

• After taking the square root of both sides

• After adding the square to both sides

• After taking half of b

• After setting the equation equal to zero

Solve

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Solve by taking square roots:

5m² + 1 = 6

• m = 1

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Solve using square roots.
4m² - 100 = 0

• m=25, -25

• m=96

• m=5, -5

• m=-96

What is the standard form for a Quadratic?

• ax²+ bx = - c

• x = -b ± √(b²-4ac) / 2a

• ax² + bx + c

• y = mx + b