Question

fifind the value of the expression when x = 2, Y =-3 and Z =1

Answer 1

Answer:

Step-by-step explanation:

= x^2 + y^2 - z^2 + 2xy - 4yz + 3xz

= (2)^2 + (-3)^2 - (1)^2 + (2 × 2 × -3) - (4 × -3 × 1) + (3 × 2 × 1)

= 4 + 9 - 1 + (-12) - (-12) + (6)

= 4 + 9 - 1 - 12 + 12 + 6

= 18 answer

pls mrk as brnlst