Ch3/4 Lesson 1 Review on factoring trinomials

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Presentation transcript:

Ch3/4 Lesson 1 Review on factoring trinomials © Copyright all rights reserved to Homework depot: www.BCMath.ca

I) Factoring Trinomials In this section, you will be factoring trinomials where the coefficient of x2 is not equal to one. Can’t factor out the “3” like the previous section…. There are 3 different methods for factoring Trinomials B.U.M. Method Easiest, straight-forward, Long Criss-Cross Method Fast, Quick with Numbers, Hard Grouping Method Textbook, standard method

ii) BUM Method Ex #1) Factor the following Trinomial using the BUM Method Bring the First term to the Last term and Multiply them Factor, two numbers that multiply to 24 and adds to -14 Bring the First term back in front of each “x” Factor/Bum out any common factors in each binomial:

Practice: Factor each of the following trinomials using the BUM Method

III) Grouping Method Multiply the First & Last Numbers Find 2 numbers that MULTIPLY to 24 and ADDS to 14 Split the 14 to the two factors Group the First 2 and Last 2 terms Factor out any common factors from each bracket The Binomial is a GCF. Factor it out

Practice: Factor each of the following using the Grouping Method

III) Criss-Cross Method Pick 2 numbers that multiply to the FIRST term Pick 2 numbers that multiply to the LAST term Multiply sides ways or Criss-Cross The sum must equal the middle term Numbers on the left go in front of each bracket Numbers that were multiplied together can not go in the same bracket

Practice: Factor the following using the Criss-Cross Method

Ex: Factor each of the following trinomials:

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