Question

(i) Substitſiting x = 1, y = -2 and z = 3 in the given expression, we get:
x + y + zº - 3xyz = (1) + (-2)' + (3) 3 - 3x1x (-2) x 3
= 1 - 8 + 27 + 18 = 38.


( explain how and why )​

Answer 1

Answer:

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Step-by-step explanation:

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