Quick Homework Help

# what is a factor of 9z squared subtract 144 ⚑ Flag

by Uriel004 at April 29, 2010

If you're saying9z-144, then the factor is 9. The factor is any number that you can take out of the equation/expression. For example, 9 goes into 9z once (since 9 times z is 9z) and 9 goes into 144 16 times (9 times 16 is 144).The factored form should be as follows:9(z-16)Hope it helped. x)

Gentou April 29, 2010

9z^2-144 is a difference of squares and can be re-written as 3^2 z^2 - 12^2 = (3z-12)(3z+12)

JJennings April 29, 2010

=9z^2-144=9(z^2-16)=9(z+4)(z-4)z=4 or z=-4

gibby. April 30, 2010

=9z^2-144=9(z^2-16)=9(z+4)(z-4)z=4 or z=-4

Joe_the_Love_Guru April 30, 2010

According to the topic of the video, 9z^2-144 is a difference of squares:3^2 z^2 - 12^2 = (3z-12)(3z+12)this is your answer.Good luck,Kamel

(9z -144) = (3z+12)(3z-12), therefore z = plus or minus 4

Huiho May 01, 2010

exactly.. all of the above

wheremyavatars October 14, 2010

all of the below... *ahem..

wheremyavatars October 14, 2010