Question

Find the value of (0.2)³ - (0.3)³ + (0.1)³

Answer 1

Answer:

Step-by-step explanation:

3 ×0.2×0.1×-0.3 =-0.018

Answer 2

Step-by-step explanation:

Let a = 0.2, b = -0.3 and c = 0.1

∴ a + b + c = 0.2 + (-0.3) + 0.1

= 0.3 - 0.3

= 0

→ a³ + b³ + c³ = 3abc

∴ (0.2)³ - (0.3)³ + (0.1)³

= (0.2)³ + (-0.3)³ + (0.1)³

= 3(0.2)(-0.3)(0.1)

= -0.018 Ans.

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