Factor higher degree polynomials by grouping. 8.8 Factor By Grouping Factor higher degree polynomials by grouping.
Factoring a Common Binomial Factor the expression. 4x(x - 3) + 5(x – 3) What do they have in common? (x – 3) Rewrite as (x – 3)(4x + 5) 2y2(y – 5) – 3(5 – y) If you factored a -1 from -3(5 - y) you would have something in common. Rewrite as (y – 5)(2y2 + 3)
You Try! y2(y – 4) + 5(4 – y) Factor the expression. x(x - 2) + (x – 2) Rewrite as (x – 2)(x + 1) x(13 + x) – (x + 13) Rewrite as (x + 13)(x - 1) y2(y – 4) + 5(4 – y) Rewrite as (y – 4)(y2 – 5)
Factor by Grouping Factor the polynomial. a3 + 3a2 + a + 3 Group items Factor the GCF from each group a2(a + 3) + (a + 3) Rewrite (a2 + 1)(a + 3)
Practice Factor the polynomial. y2 + 2x + yx + 2y Group items (y2 + 2y) + (2x + yx) Factor the GCF from each group y(y + 2) + x(2 + y) Rewrite (y + 2)(y + x)
You Try! r2 + 4r + rs + 4s x3 – 10 – 5x + 2x2 Factor the polynomial.
Factor Completely Factor out GCF: 4𝑞 𝑞 3 −2 𝑞 2 +3𝑞−6 4 𝑞 4 −8 𝑞 3 +12 𝑞 2 −24𝑞 Factor out GCF: 4𝑞 𝑞 3 −2 𝑞 2 +3𝑞−6 Factor by grouping:4𝑞[ 𝑞 3 −2 𝑞 2 )+(3𝑞−6 ] 4𝑞 𝑞 2 𝑞−2 +3 𝑞−2 4𝑞( 𝑞 2 +3)(𝑞−2)
Assignment Odds P.531 #9-35