Guns n' Roses - November rain https://www.youtube.com/watch?v=aDLrrwWxejM Teach me how to factor http://www.youtube.com/watch?v=OFSrINhfNsQ

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

Red Velvet Cake

Unit 5 – Algebra in Context Word Wall

Perfect Squares 12 22 32 42 52 …

Solving Quadratic Equations

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.

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 +2 +2 –9 –9 Step 2: Solve each equation x = 2 x = –9

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 +5 +5 Step 3: Solve each equation x = –5 x = 5

Solve: x2 = 3x x2 – 3x = 0 x(x – 3) = 0 x = 0 , x – 3 = 0 +3 +3 x = 0 G 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 +3 +3 Step 4: Solve each equation x = 0 x = 3

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

Use square root property H Solve: x2 = 9 Use square root property This means x = –3 and x = 3

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

Use square root property J Solve the equation Use square root property

Use square root property K Solve the equation Divide both sides by 6 Use square root property

Use square root property L Solve the equation 3x2 – 33 = 0 +33 +33 Add 33 to both sides 3x2 = 33 Divide both sides by 3 x2 = 11 Use square root property