Question

Without finding cubes find the value of (1.2)3

– (2.7)3 + (1.5)3

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Answer 1

Answer:

- 14.58

Step-by-step explanation:

We have,

1.2 + 1.5 + (-2.7) = 0

Thus, (1.2)³ - (2.7)³ + (1.5)³ = 3 × 1.2 × 1.5 × (- 2.7)

= - 14.58 Ans

Using the identity:

Using the identity:a³+b³+c³ = 3abc, if (a+b+c) = 0

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