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Aptitude - Decimal Fraction - Discussion

Discussion Forum : Decimal Fraction - General Questions (Q.No. 3)
Decimal Fraction
3.

The value of (0.96)3 - (0.1)3 is:
(0.96)2 + 0.096 + (0.1)2
0.86
0.95
0.97
1.06
Answer: Option
Explanation:
Given expression
= (0.96)3 - (0.1)3
(0.96)2 + (0.96 x 0.1) + (0.1)2
= a3 - b3
a2 + ab + b2
= (a - b)
= (0.96 - 0.1)
= 0.86
Discussion:
22 comments Page 3 of 3.
Shivakarthik said:   1 decade ago
The formula for a cube - b cube is (a-b)(a2+ab+b2) this 2 s are squares so we cancel the denominator we get (a-b).

Hope you understand.
Gokil said:   1 decade ago
How (a-b) possible? please tell.
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