Question

100 puncte

$1 - ( - \frac{1}{2} )^{2} + ( - \frac{1}{2} )^{3} - ( - \frac{1}{2})^{4}$
TOTI PASII VA ROG ! ​

Answer 1

1 - (-1/2)² + (-1/2)³ - (-1/2)⁴ =

= 1 - (1/2) + (-1/8) - (1/16)

= 1 - 1/4 - 1/8 - 1/16

= (16 - 4 - 2 - 1)/16

= 9/16

Answer 2

$\it 1-\Big(-\dfrac{1}{2}\Big)^2+\Big(-\dfrac{1}{2}\Big)^3-\Big(-\dfrac{1}{2}\Big)^4=1-\dfrac{1}{4}-\dfrac{1}{8}-\dfrac{1}{16}=1-\dfrac{7}{16}=\dfrac{9}{16}$