Expand (3x-1/2x)^3.
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Answer:
=(3x-1/2x)³
=(3x)³-(1/2x)³-3(3x)²×1/2x+3×3x(1/2x)²
=27x³-1/8x³-27/2x+9/4x
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Step-by-step explanation:
we must use the cube identity
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