Presentation on theme: "Lesson 5-11 Using Several Methods of Factoring"— Presentation transcript:
1 Lesson 5-11 Using Several Methods of Factoring Objective: To factor polynomials completely
2 Review factoring: Factor out the greatest common monomial Look for the difference of two squaresLook for a perfect square trinomialIf it is not a perfect square – is it x2+ bx + c? (factors of c that add up to b)If it is ax2 + bx + c use “magic method” or trial and error to find factors of a and c.If there are 4 or more terms, factor by grouping
3 9ay2- 4a Factor out a common monomial Factor as the difference of two squares
4 – 2x4 – 12x3 – 18x2 Factor out a common monomial Factor as a perfect square trinomial.
5 6n3 – 21n2 – 45n Factor out a common monomial Use magic method or trial and error