Video Snippets on Math Topics
(Algebra & Pre-Algebra)

 #1 Click on Video for tip on "The Order of Operations" Example: 4 - (10 -8)3 · 2 = 4 - (2)3 · 2 = 4 - 8 · 2 = 4 - 16 -12 #2 Click on Video for tip on "Combining Like Terms" & "Multplying Expressions" Combining Terms: 4x2 - 2x - x2 - 6x = 3x2 - 8x Multiplying Expressions: (3a2bc4)(4a3b3c5) = 12a5b4c9 #3 Click on Video for tip on "Adddtion & Subtraction of Signed Numbers" Examples: 6 + 4 = 10 -6 - 4 = -10 -6 + 4 = -2 6 - 4 = 2 #4 Click on Video for tip on "Multiplication & Division of Signed Numbers" Examples: (3)(4) = 12 (-3)(-4) = 12 (-3)(4) = -12 3(-4) = -12 12 ÷ (-4) = -3 -15 ÷ (-3) = 5 #5 Click on Video for tip on "Addition & Subtraction of Polynomials" Examples: 3x2 + x - 2 + (4x2 - 5x - 6) = 7x2 - 4x - 8 5x2 - x + 3 - (2x2 + 3x + 4) = 3x2 - 4x - 1 #6 Click on Video for tip on "Factoring Greatest Common Factor" Examples: 5x - 15 = 5(x - 3) 12x2y4 -8x3y2 + 4x2y = 4x2y(3y3 - 2xy + 1) #7 Click on Video for tip on "Factoring Difference of Two Squares" Examples: x2 - 25 = (x - 5)(x + 5) 9x2y2 - 49 = (3xy + 7)(3xy - 7) 1 - 4x2 = (1 + 2x)(1 - 2x) #8 Click on Video for tip on "Solving Equations" Example: 5(x - 3) + 2 = 5(2x-8) - 3