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प्रश्न
If x = 1, y = 2 and z = 5, find the value of x3 − y3− z3
योग
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उत्तर
x3 − y3− z3
Substituting x = 1, y = 2 and z = 5 in the given expression:
x3 − y3− z3
= (1)3 − (2)3 − (5)3
= (1 × 1 × 1) − (2 × 2 × 2) − (5 × 5 × 5)
= 1 − 8 − 125
= 1 − 133
= −132
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