Steps for Solving Quadratics

Solve the equation: 
5x² - 35x + 60 = 0

• x = 3,  -4

• x = -3,  4

• x = 3,  4

• x = -3,  -4

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

Which line contains a mathematical error when completing the square?

• Line 1

• Line 2

• Line 3

• Line 4

• There is no error

Which line contains a mathematical error when completing the square?

• Line 1

• Line 2

• Line 3

• Line 4

• Line 5

What did you need to add to both sides to complete the square?

• 6

• 36

• -6

• -12

• x = 2 and -2

• x = -6 and 2

• x = 6 and -2

• x = 1 and -1

• x = −1 and 11

• x = 1 and −11

• x = −10 and 11

• x = −5 and 25

• x = 3 and -4

• x = -3 and 4

• x = 3 and 4

• x = -3 and -4

• x = -1 ± √6

• x = 1 ± √6

• x = 6 ± √1

• x = -6 ± √1

• x = -5 ± √30

• x = 5 ± √30

• x = 5 ± √5

• x = -5 ± √5