Review of Solving Quadratics

What are the factors AND solutions of x² + 2x – 3 = 0

• (x - 2)(x + 1); x=2, x=-1
• (x + 1)(x - 3); x=-1, x=3
• (x + 2)(x - 1); x=-2, x=1
• (x - 1)(x + 3); x=1, x=-3

Factor and Solve

6x² + 17x + 12 = 0

• x = -4/3, x = -3/2

• x = 9, x = 8

• x = 4, x = 3

• x = -4, x = -3

What are the steps to solving this by completing the square?

a² + 10a + 21 = 0

• Subtract 21 from both sides of the equation

• Add 25 to both sides of the equation

• Subtract 5 from both sides of the equation

• Take the square root of both sides of the equation

• Rewrite the left hand side as a (binomial)²

​Complete the quadratic formula

Black question mark ​ (a)  

Blue question mark ​ (b)  

Red question mark ​ (c)  

Solve by factoring: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Solve by the Square Root method: x² = 16

• ± 4

• ± 8

• 4

• 8

Solve by the Square Root method:

-5x² = -50

• ± 5

• ± 10

• ± √10

• -10

Solve the following quadratics equation by completing the square...

x² + 4x + 1 = 0

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2