Homework Help

ax squared - 18ax + 77a`` factor completely

user profile pic

schooledmom

Posted May 23, 2013 at 7:58 PM via web

dislike 2 like

ax squared - 18ax + 77a``

factor completely

2 Answers | Add Yours

user profile pic

durbanville | High School Teacher | (Level 1) Educator Emeritus

Posted May 23, 2013 at 8:24 PM (Answer #1)

dislike 1 like

Factor completely:

`ax^2-18ax+77a` Take out the common factor a:

`= a(x^2-18ax+77a)`

Now factorize the brackets using the factors of `x^2 ...(x times x)` and the factors of 77 (in this case `11 times 7) ` to render a middle term of 18:

`therefore = a(x-11)(x-7)` 

Ans: = a(x-11)(x-7)

Sources:

user profile pic

oldnick

Posted May 24, 2013 at 3:25 AM (Answer #2)

dislike 1 like

`ax^2-18ax+77a=a(x^2-18x+77)=`

`=a(x^2-11x-7x+77)=a[x(x-11)-7(x-11)]=`

`=a(x-11)(x-7)`

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes