The value of (0.03)3 - (0.02)3 is
...The value of (0.03)3 - (0.02)3 is
0.019
0.0019
0.00019
0.000019
0.000035
Correct answer is D
Using the method of difference of two cubes,
a3−b3=(a−b)(a2+ab+b2)
(0.03)3−(0.02)3=(0.03−0.02)((0.03)2+(0.03)(0.02)+(0.02)2
= (0.01)(0.0009+0.0006+0.0004)
= 0.01×0.0019
= 0.000019
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