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Write the following cubes in expanded form:
(i) \((2x + 1)^3=\)
(ii) \((2a − 3b)^3=\)
Answer variants:
\(8a^3 – 27b^3 – 36a^2b - 54ab^2\)
\(8x^3 + 12x^2 + 6x + 1\)
\(8x^3 -12x^2 + 6x -1\)
\( 8a^3 + 27b^3 –36a^2b + 54ab^2\)
\(8a^3 – 27b^3 – 36a^2b + 54ab^2\)
\(8x^3 - 12x^2 + 6x + 1\)
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