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Nilai dari 2 − 2 + 2 − 3 + 2 − 4 2 1 + 2 0 + 2 − 1 = ....

Nilai dari $\frac{2 ^{1} + 2 ^{0} + 2 ^{- 1}}{2 ^{- 2} + 2 ^{- 3} + 2 ^{- 4}} =$ ....

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$table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator 2 to the power of 1 plus 2 to the power of 0 plus 2 to the power of negative 1 end exponent over denominator 2 to the power of negative 2 end exponent plus 2 to the power of negative 3 end exponent plus 2 to the power of negative 4 end exponent end fraction end cell equals cell fraction numerator 2 to the power of 1 left parenthesis 1 plus 2 to the power of negative 1 end exponent plus 2 to the power of negative 2 end exponent right parenthesis over denominator 2 to the power of negative 2 end exponent left parenthesis 1 plus 2 to the power of negative 1 end exponent plus 2 to the power of negative 2 end exponent right parenthesis end fraction end cell row blank equals cell 2 to the power of 1 over 2 to the power of negative 2 end exponent end cell row blank equals cell 2 to the power of 1 minus left parenthesis negative 2 right parenthesis end exponent end cell row blank equals cell 2 cubed end cell row blank equals 8 end table$