Question

z^2-81/7z+28 * z+4/z-9
multiply & simplify
someone plz help

Answer 1

I just solved it in your earlier post.

Answer 2

\[\[{z^2-81 \over 7z+28}.{z+8 \over z-9}={(z+9)(z-9) \over 7(z+8)}.{z+8 \over z-9}={z+9 \over 7}\]\]

Answer 3

thanks but its too late now the test is over

Answer 4

Oh I am sorry for that.