( 0.5 x 0.5 x 0.5 x 0.6 x 0.6 x 0.6 ) / ( 0.5 x 0.5 -

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Given expression
= [(0.5)³ + (0.6)³ ] / [(0.5)² - 0.5 x 0.6 + (0.6)²]
= (a³+b³) / ( a²-ab+b²)
= a + b
= 0.5 + 0.6
= 1.1