6. If x= 1, y = -1, z = 3, a = 1, b = -2, C=2, find the value of
(a) ax² + by² - cz²
(b) x³ + y³ - 3xyz + a²(b-c)
(c) x² + y² + z² + 2ab + 2bc +2ca
+xyz
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2
Answer:
6.
(a) 1×1 square -2×(-1)square- 2×3square
= 1-2×1-2×9
= -1×-1×9
= 1×9
= 9
Answered by
2
Answer:
- 17
- 10
- 0
Step-by-step explanation:
In the image*
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