Question

evaluate X2+y2-z2-3xyz If x=2,y=-2,z=3​

Answer 1

Answer:

53

Step-by-step explanation:

(2)2 + (-2)2 + (3)2 - 3×2×(-2)×3

= 4 + 4 + 9 +36

=53

Answer 2

Question :-

Evaluate x² + y² – z² – 3xyz, If

• x = 2.
• y = –2.
• z = 3.

Solution :-

⇒ x² + y² – z² – 3xyz.

⇒ (2)² + (–2)² – (3)² – 3(2)(–2)(3).

⇒ 4 + 4 – 9 + 36.

⇒ 8 – 9 + 36

⇒ –1 + 36.

⇒ 35.

Therefore, x² + y² – z² – 3xyz = 35.