1. Guns n' Roses - November rain
Teach me how to factor

6. Ingredients
2 1/2 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon cocoa 1 1/2 cups granulated sugar 2 eggs 1 1/2 cups canola oil 1 teaspoon vinegar 1 (1-ounce) bottle red food coloring 1 teaspoon vanilla 1 cup buttermilk

7. Red Velvet Cake

10. Unit 5 – Algebra in Context
Word Wall

11. Perfect Squares …

12. Solving
Quadratic Equations

13. Solving Quadratic Equations
1. Write equation in standard form.
ax2 + bx + c = 0
(a, b, c are real numbers and a0)
2. Factor polynomial completely.
3. Set each factor equal to zero, using
‘Zero Product Property’.
If xy = 0, then x=0 or y=0 (or both)
4. Solve resulting equations.

14. Solve: x2 = –7x + 18 x – 2 = 0 , x + 9 = 0 +2 +2 –9 –9 x = 2 x = –9 A
Step 1:
Let each factor equal 0
x – 2 = 0 ,
x + 9 = 0
– –9
Step 2:
Solve each equation
x = 2
x = –9

15. Solve: x2 – 25 = 0 (x + 5)(x – 5) = 0 x + 5 = 0 x – 5 = 0 x = –5 x = 5
Step 1: Factor completely
Step 2:
Let each factor equal 0
x + 5 = 0 ,
x – 5 = 0
–5 –5
Step 3:
Solve each equation
x = –5
x = 5

16. Solve: x2 = 3x x2 – 3x = 0 x(x – 3) = 0 x = 0 , x – 3 = 0 +3 +3 x = 0G
Solve: x2 = 3x
Step 1: Write in standard form.
Move 12x to left side of the
equation. Change the sign.
x2 – 3x = 0
x(x – 3) = 0
Step 2: Factor completely
Step 3:
Let each factor equal 0
x = 0 ,
x – 3 = 0
Step 4:
Solve each equation
x = 0
x = 3

17. Solving quadratic equations using Square Root Property
a is a positive number

18. Use square root propertyH
Solve: x2 = 9
Use square root property
This means x = –3 and x = 3

19. Use square root property
Solve: x2 = 12 I
Use square root property

20. Use square root propertyJ
Solve the equation
Use square root property

21. Use square root propertyK
Solve the equation
Divide both sides by 6
Use square root property

22. Use square root propertyL
Solve the equation
3x2 – 33 = 0
Add 33 to both sides
3x = 33
Divide both sides by 3
x2 = 11
Use square root property