Question

answer this please friends by putting x= -1 , y= -2, z= 2

Answer 1

x = -1, y = -2, z = 2

-8xy + 12y² - 18yz + 8z² - 2xz

= -8(-1)(-2) + 12(-2)² - 18(-2)(2) + 8(2²) - 2(-1)(2)

= -16 + 12(4) + 72 + 8(4) + 4

= -16 + 48 + 72 + 32 + 4

= 140

Answer 2

ans is 140...mark me brainlist