2(1/2)³+(1/2)²-5(1/2)+2
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2(1/2)³+(1/2)²-5(1/2)+2
= (2 × 1/2³ ) + (1/2²) - (5×1/2 )+ 2
= 1/2² + (1/2²) - (5×1/2 )+ 2
= (1/4 +1/4) -5/2 +2
= (1/2 -5/2) +2
= -4/2 +2
= -2+2
= 0
= (2 × 1/2³ ) + (1/2²) - (5×1/2 )+ 2
= 1/2² + (1/2²) - (5×1/2 )+ 2
= (1/4 +1/4) -5/2 +2
= (1/2 -5/2) +2
= -4/2 +2
= -2+2
= 0
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