Home > PC3 > Chapter 7 > Lesson 7.1.1 > Problem7-8

7-8.

Factor completely.

1. $81 x ^ { 3 } y - 12 x ^ { 2 } y$

Factor out the greatest common factor.

1. $3 ( 2 x + 1 ) + ( x + 5 ) ( 2 x + 1 )$

Factor $(2x+1)$ out of each term.

1. $2 ( 3 x - 7 ) ^ { 2 } + ( x - 2 ) ( 3 x - 7 )$

Write the squared factor twice to visualize what is in common.

1. $m ( x + y ) + ( x + y ) ^ { 2 }$

Follow the same procedure in part (c).