Question

someone please tell me what i am doing wrong
multiply and simplify
z² 8z+24
----- *---------
9z+27 8z^9

Answer 1

need to show your work first

Answer 2

factor out a (z+3) in the numerator and denominator, leaving 8/9
cancel z^2 and leave z^7 in denominator

Answer 3

simplify everything to factors to see what you can cross out

Answer 4

z^2(8z+24)=z^2*8(z+3)
(9z+27)(8z^9)=8(z+3)*8*z^9
8z^2(z+3)
8z^2(z+3) * 1/8z^9
1*1/8z^9
1/8z^9

Answer 5

is that sposed to be an equals sign between them?

Answer 6

yes this is the equation
z² * 8z+24
9z+27 8z^9

Answer 7

\[\frac{z z}{9 (z+3)} * \frac{8(z+3)}{8zzzzzzzzz}\]

Answer 8

get rid of 2 z's top and bottom; and the (z+3) top and bottom to get; and the 8's top to bottom to get:

1/9z^6

Answer 9

ack!!... 1/9z^7 :) forgot how to subtract

Answer 10

does that make sense?

Answer 11

i think so will u show the work so i can make notes for the next problem

Answer 12

i did show the work.... cant really see how to show any more of it :/

Answer 13

in my work i think i forgot about the 9

Answer 14

when everything is factored; you simple cancel out (its a bad term really) everything that is the same top to bottom; because they go to 1

z/z = 1

8/8 = 1

(z+3)/(z+3) = 1

so they become redundant in the equation

Answer 15

whats left is:

1
------
9 z^7

Answer 16

ty that makes more sense