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Asked by Shagufta Last Modified
Answer 
Tasneem
(i) 
Let x = −12, y = 7, and z = 5
It can be observed that,
x + y + z = − 12 + 7 + 5 = 0
It is known that if x + y + z = 0, then
∴ 
= −1260
(ii) 
Let x = 28, y = −15, and z = −13
It can be observed that,
x + y + z = 28 + (−15) + (−13) = 28 − 28 = 0
It is known that if x + y + z = 0, then
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