Question

Calcule o valor de:
y = 2-² + 2² -2-¹ / 2-² - 2-¹

me ajudem pfvr ​

Answer 1

Explicação passo-a-passo:

$\sf y=\dfrac{2^{-2}+2^2-2^{-1}}{2^{-2}-2^{-1}}$

$\sf y=\dfrac{2^{-2}\cdot(1+2^4-2)}{2^{-2}\cdot(1-2)}$

$\sf y=\dfrac{1+2^4-2}{1-2}$

$\sf y=\dfrac{1+16-2}{-1}$

$\sf y=\dfrac{15}{-1}$

$\sf \red{y=-15}$