The difference of cubes — task. Mathematics CBSE, Class 7.

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Do the multiplication

(0.1 k - 1.2 j) \cdot (0.01 k^{2} + 0.12 k j + 1.44 j^{2})

Choose the correct answer:

$0.01 k^{2} - 0.24 k j + 1.44 j^{2}$
$0.01 k^{3} - 1.44 j^{3}$
$0.001 k^{3} - 1.728 j^{3}$
$0.001 k^{3} + 1.728 j^{3}$
$0.01 k^{2} + 0.24 k j + 1.44 j^{2}$
none of the expressions

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