Question

9. Evaluate the following at x=-1, y = -2. z = 0 : (ii) (x + y)² – (y + z)²– (x + z)² – 3 xyz +4


please give me answer 8

please give correct answer and explain ​

Answer 1

Step-by-step explanation:

(x+y)2-(y-z)2-(x+z)2-3xyz+4

(1+(-2))2-(-2+0)2-(1+0)2-3.1.-2.0 +4

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

=4+2-1+0+4

=9

=