Question

0. If x = 4, y = 3 and 2 = -2, find the value of:
(i) x2 + y2 + z2 + 2xyz
(ii) x2 + y + z3 – 3xyz
7
17​

Answer 1

Answer

(i) SEE ABOVE ATTACHMENT

(ii) x2 + y + z3 - 3xyz

= (4)2 + (3) + (-2)3 - 3(4)(3)(-2)

= 8 + 3 - 6 - 72

= -67

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Answer 2

Answer:

The above answer is correct

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