Question

Evaluate:
Q. No 1.....

Answer 1

Step-by-step explanation:

x³ + y³ + z³ - 3 × x × y × a

=》 (-2)³ + (-1)³ + (3)³ - 3 × (-2)×(-1)×(3)

=》 8 + 1 + 27 - (18)

=》 36 - 18

=》 18 Ans

Answer 2

Answer:

hey there,

x = -2

y = -1

z = 3

Putting these values,

$= {x}^{3} + {y}^{3} + {z}^{3} - 3xyz \\ = { - 2}^{3} + { - 1}^{3} + {3}^{3} - 3 ( - 2)( - 1)(3) \\ = - 8 - 1 + 27 - 18 \\ = - 27 + 27 \\ = 0$

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