Algebra 2 Solving Quadratics

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x

• Solve for x

• FOIL

• Set each binomial factor equal to zero

Solve:

3x² + 18x +15 = 0

Hint: Factor GCF first.

• x = 3, 2

• x = 5, 1

• x = -5, -1

• x = -3, -2

Solve by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6

• x = 3 and x = -6

• x = -9 and x = 2

• x = 9 and x = -2

• x = 1 and x = - 5

• x= - 1 and x = 5

• x = 1 and x = 5

• x = -1 and x = - 5

Solve

Hint: Factor or Quadratic Formula

• x = 3

  x = -1

• x = -3

  x = 1

• x = 0

  x = -3

• A
• B
• C
• D

• 2

• -3

• -5

• -2

• 3

• 5

• 0

In the calculator enter the equation

y=x² + 13

Mathematical Equivalence

ON

3x² = 12

• ± 2

• 2

• ± √12

• ± 4