Quadratic Solving Difference of Squares

What is this?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

Can this quadratic be solved by BOTH square root method AND difference of squares?
16x² - 25 = 0

• Yes!

• No - just square root method

• No - just difference of squares method

The discriminant is

• ax²  + bx  +  c

• - b/2a

• b² - 4ac

• b² + 4ac

Which method is MOST EFFICIENT to solve:
8x²  -  6  = 0

• Square Root Method

• Greatest Common Factor (GCF)

• Complete the Square

• Quadratic Formula

Solve:
x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Solve:  x² - 81 = 0 

• 9

• 9, -9

• 3, -3, 9, -9

• None of the above

4x² - 25

• (2x + 5) (2x - 5)

• (2x - 5)²

• (2x + 5)²

• 2x + 5(2x - 5)

Solve by Factoring:

x² - 49 = 0

• x = 7

• x = 7, x = -7

• x = 49

• x = 24.5, x = -24.5

• 10

• -10

• 1

• -1

• 0

(5x - 3)(5x + 3) ​ (a)   a difference of two squares (D.O.T.S.).

• is

• is not