Question

9. Evaluate the following at x =-1, y= -2, z=0 (iii) (x+y+z) (x+y-z) -x²y-y²z+xz²-4xy



please give me correct answer

This question answer positive 3

please give me correct answer and explain ​

Answer 1

Answer:

16 is your final answer..

Step-by-step explanation:

(x+y+z) (x+y-z) -x²y-y²z+xz²-4xy

=(-1+(-2)+0) (-1+(-2)-0) -1 *-2+4*0+(-1)*0 -  -1 * -2

=(-3)*(-3) *-1 *-2+4*0+0(-1)*0 - (-1)*(-2)

=9*2+0+0*0-2

=18+0-2

=16

BUDDY I AM NOT SURE WITH THE ANSWER BUT I TRIED IT WITH LOT OF EFFORTS SO PLEASE MARK ME AS BRAINLIEST..IT IS HUMBLE REQUEST...