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Algebra: Chapter 6, Lesson 8, page 286. Solving Equations by Factoring The principle of zero products states that: for any rational numbers a and b, if the product `ab = 0`, then `a=0` or `b=0` or both `a` and `b … Continue reading →

Algebra: Chapter 6, Lesson 7, page 283. Factoring: A General  Strategy To factor polynomials: Always look first for a common factor Then look at the number of terms 2 terms – determine whether you have a difference of 2 squares … Continue reading →

Algebra: Chapter 6, Lesson 6, page 281. Factoring by Grouping Factoring by grouping works for polynomials that are greater than trinomials. Grouping usually works with polynomials that have 4 terms. All that you have to do is group the polynomials … Continue reading →

Algebra: Chapter 6, Lesson 5, page 278, Day 1 – 2. Factoring `ax^2 + bx + c` Go slow, be methodical and do NO shortcuts. The Box and the Cross are your friends when we have `ax^2` instead of just … Continue reading →

Algebra: Chapter 6, Lesson 4, page 273 (day #3). Factoring quadratics of the form … `x^2 + bx +c ` The BOX METHOD is linked here, all you need is a computer with sound. You can also grab it for … Continue reading →

Algebra: Chapter 6, Lesson 4, page 273 (day #2). Factoring quadratics of the form … `x^2 + bx +c ` The BOX METHOD is linked here, all you need is a computer with sound. You can also grab it for … Continue reading →

Algebra: Chapter 6, Lesson 4, page 273. Factoring quadratics of the form … `x^2 + bx +c ` The BOX METHOD is linked here, all you need is a computer with sound. You can also grab it for your iPod … Continue reading →

Algebra: Chapter 6, Lesson 3, page 270 Trinomial Squares We are going backward again, using the properties: `(a + b)(a + b) = a^2 + 2ab + b^2 = (a + b)^2` `(a – b)(a – b) = a^2 – … Continue reading →

Algebra: Chapter 6, Lesson 2, page 266. Difference of 2 squares For a binomial to be a difference of 2 squares, 2 conditions must be met. There must be 2 terms, both must be square (e.g., `4x^2` and `9x^4`) There … Continue reading →

Algebra: Chapter 6, Lesson 1, page 262. Factoring Polynomials Divisibility Rules A number is divisible by the numbers below if the following rules hold: 2, if the last digit is an even number 3, if the sum of the digits … Continue reading →